diff --git a/Metaballs.xcodeproj/project.pbxproj b/Metaballs.xcodeproj/project.pbxproj
index 1159916..86b4b1d 100644
--- a/Metaballs.xcodeproj/project.pbxproj
+++ b/Metaballs.xcodeproj/project.pbxproj
@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		C03904B31F43CF3F00C74022 /* PreferencesWindowController.swift in Sources */ = {isa = PBXBuildFile; fileRef = C03904B11F43CF3700C74022 /* PreferencesWindowController.swift */; };
 		C09161701F3F5AE6009C4263 /* PreferencesViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = C091616F1F3F5AE6009C4263 /* PreferencesViewController.swift */; };
 		C0BBE36B1F2E816500E68524 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = C0BBE36A1F2E816500E68524 /* AppDelegate.swift */; };
 		C0BBE36D1F2E816500E68524 /* ViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = C0BBE36C1F2E816500E68524 /* ViewController.swift */; };
@@ -44,6 +45,7 @@
 /* End PBXContainerItemProxy section */
 
 /* Begin PBXFileReference section */
+		C03904B11F43CF3700C74022 /* PreferencesWindowController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = PreferencesWindowController.swift; sourceTree = "<group>"; };
 		C091616F1F3F5AE6009C4263 /* PreferencesViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = PreferencesViewController.swift; sourceTree = "<group>"; };
 		C0BBE3671F2E816500E68524 /* Metaballs.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Metaballs.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		C0BBE36A1F2E816500E68524 /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
@@ -158,6 +160,7 @@
 				C0BBE3A31F2E81C700E68524 /* Metaballs.swift */,
 				C0CE7BFF1F362C3F001516B6 /* Geometry.swift */,
 				C0DF1D781F3789DC0038B0A0 /* Memory.swift */,
+				C03904B11F43CF3700C74022 /* PreferencesWindowController.swift */,
 				C091616F1F3F5AE6009C4263 /* PreferencesViewController.swift */,
 			);
 			path = MetaballsKit;
@@ -377,6 +380,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				C03904B31F43CF3F00C74022 /* PreferencesWindowController.swift in Sources */,
 				C0DF1D791F3789DC0038B0A0 /* Memory.swift in Sources */,
 				C0BBE3A41F2E81C700E68524 /* Metaballs.swift in Sources */,
 				C0CE7C001F362C3F001516B6 /* Geometry.swift in Sources */,
diff --git a/Metaballs/Base.lproj/Main.storyboard b/Metaballs/Base.lproj/Main.storyboard
index b006e01..34d3a9b 100644
--- a/Metaballs/Base.lproj/Main.storyboard
+++ b/Metaballs/Base.lproj/Main.storyboard
@@ -25,7 +25,7 @@
                                         <menuItem isSeparatorItem="YES" id="VOq-y0-SEH"/>
                                         <menuItem title="Preferences…" keyEquivalent="," id="BOF-NM-1cW">
                                             <connections>
-                                                <segue destination="UFt-7I-hit" kind="show" id="5lj-Ty-4XS"/>
+                                                <segue destination="UFt-7I-hit" kind="show" identifier="preferences" id="5lj-Ty-4XS"/>
                                             </connections>
                                         </menuItem>
                                         <menuItem isSeparatorItem="YES" id="wFC-TO-SCJ"/>
@@ -123,467 +123,6 @@
                                     </items>
                                 </menu>
                             </menuItem>
-                            <menuItem title="Edit" id="5QF-Oa-p0T">
-                                <modifierMask key="keyEquivalentModifierMask"/>
-                                <menu key="submenu" title="Edit" id="W48-6f-4Dl">
-                                    <items>
-                                        <menuItem title="Undo" keyEquivalent="z" id="dRJ-4n-Yzg">
-                                            <connections>
-                                                <action selector="undo:" target="Ady-hI-5gd" id="M6e-cu-g7V"/>
-                                            </connections>
-                                        </menuItem>
-                                        <menuItem title="Redo" keyEquivalent="Z" id="6dh-zS-Vam">
-                                            <connections>
-                                                <action selector="redo:" target="Ady-hI-5gd" id="oIA-Rs-6OD"/>
-                                            </connections>
-                                        </menuItem>
-                                        <menuItem isSeparatorItem="YES" id="WRV-NI-Exz"/>
-                                        <menuItem title="Cut" keyEquivalent="x" id="uRl-iY-unG">
-                                            <connections>
-                                                <action selector="cut:" target="Ady-hI-5gd" id="YJe-68-I9s"/>
-                                            </connections>
-                                        </menuItem>
-                                        <menuItem title="Copy" keyEquivalent="c" id="x3v-GG-iWU">
-                                            <connections>
-                                                <action selector="copy:" target="Ady-hI-5gd" id="G1f-GL-Joy"/>
-                                            </connections>
-                                        </menuItem>
-                                        <menuItem title="Paste" keyEquivalent="v" id="gVA-U4-sdL">
-                                            <connections>
-                                                <action selector="paste:" target="Ady-hI-5gd" id="UvS-8e-Qdg"/>
-                                            </connections>
-                                        </menuItem>
-                                        <menuItem title="Paste and Match Style" keyEquivalent="V" id="WeT-3V-zwk">
-                                            <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
-                                            <connections>
-                                                <action selector="pasteAsPlainText:" target="Ady-hI-5gd" id="cEh-KX-wJQ"/>
-                                            </connections>
-                                        </menuItem>
-                                        <menuItem title="Delete" id="pa3-QI-u2k">
-                                            <modifierMask key="keyEquivalentModifierMask"/>
-                                            <connections>
-                                                <action selector="delete:" target="Ady-hI-5gd" id="0Mk-Ml-PaM"/>
-                                            </connections>
-                                        </menuItem>
-                                        <menuItem title="Select All" keyEquivalent="a" id="Ruw-6m-B2m">
-                                            <connections>
-                                                <action selector="selectAll:" target="Ady-hI-5gd" id="VNm-Mi-diN"/>
-                                            </connections>
-                                        </menuItem>
-                                        <menuItem isSeparatorItem="YES" id="uyl-h8-XO2"/>
-                                        <menuItem title="Find" id="4EN-yA-p0u">
-                                            <modifierMask key="keyEquivalentModifierMask"/>
-                                            <menu key="submenu" title="Find" id="1b7-l0-nxx">
-                                                <items>
-                                                    <menuItem title="Find…" tag="1" keyEquivalent="f" id="Xz5-n4-O0W">
-                                                        <connections>
-                                                            <action selector="performFindPanelAction:" target="Ady-hI-5gd" id="cD7-Qs-BN4"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Find and Replace…" tag="12" keyEquivalent="f" id="YEy-JH-Tfz">
-                                                        <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
-                                                        <connections>
-                                                            <action selector="performFindPanelAction:" target="Ady-hI-5gd" id="WD3-Gg-5AJ"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Find Next" tag="2" keyEquivalent="g" id="q09-fT-Sye">
-                                                        <connections>
-                                                            <action selector="performFindPanelAction:" target="Ady-hI-5gd" id="NDo-RZ-v9R"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Find Previous" tag="3" keyEquivalent="G" id="OwM-mh-QMV">
-                                                        <connections>
-                                                            <action selector="performFindPanelAction:" target="Ady-hI-5gd" id="HOh-sY-3ay"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Use Selection for Find" tag="7" keyEquivalent="e" id="buJ-ug-pKt">
-                                                        <connections>
-                                                            <action selector="performFindPanelAction:" target="Ady-hI-5gd" id="U76-nv-p5D"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Jump to Selection" keyEquivalent="j" id="S0p-oC-mLd">
-                                                        <connections>
-                                                            <action selector="centerSelectionInVisibleArea:" target="Ady-hI-5gd" id="IOG-6D-g5B"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                </items>
-                                            </menu>
-                                        </menuItem>
-                                        <menuItem title="Spelling and Grammar" id="Dv1-io-Yv7">
-                                            <modifierMask key="keyEquivalentModifierMask"/>
-                                            <menu key="submenu" title="Spelling" id="3IN-sU-3Bg">
-                                                <items>
-                                                    <menuItem title="Show Spelling and Grammar" keyEquivalent=":" id="HFo-cy-zxI">
-                                                        <connections>
-                                                            <action selector="showGuessPanel:" target="Ady-hI-5gd" id="vFj-Ks-hy3"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Check Document Now" keyEquivalent=";" id="hz2-CU-CR7">
-                                                        <connections>
-                                                            <action selector="checkSpelling:" target="Ady-hI-5gd" id="fz7-VC-reM"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem isSeparatorItem="YES" id="bNw-od-mp5"/>
-                                                    <menuItem title="Check Spelling While Typing" id="rbD-Rh-wIN">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="toggleContinuousSpellChecking:" target="Ady-hI-5gd" id="7w6-Qz-0kB"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Check Grammar With Spelling" id="mK6-2p-4JG">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="toggleGrammarChecking:" target="Ady-hI-5gd" id="muD-Qn-j4w"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Correct Spelling Automatically" id="78Y-hA-62v">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="toggleAutomaticSpellingCorrection:" target="Ady-hI-5gd" id="2lM-Qi-WAP"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                </items>
-                                            </menu>
-                                        </menuItem>
-                                        <menuItem title="Substitutions" id="9ic-FL-obx">
-                                            <modifierMask key="keyEquivalentModifierMask"/>
-                                            <menu key="submenu" title="Substitutions" id="FeM-D8-WVr">
-                                                <items>
-                                                    <menuItem title="Show Substitutions" id="z6F-FW-3nz">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="orderFrontSubstitutionsPanel:" target="Ady-hI-5gd" id="oku-mr-iSq"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem isSeparatorItem="YES" id="gPx-C9-uUO"/>
-                                                    <menuItem title="Smart Copy/Paste" id="9yt-4B-nSM">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="toggleSmartInsertDelete:" target="Ady-hI-5gd" id="3IJ-Se-DZD"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Smart Quotes" id="hQb-2v-fYv">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="toggleAutomaticQuoteSubstitution:" target="Ady-hI-5gd" id="ptq-xd-QOA"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Smart Dashes" id="rgM-f4-ycn">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="toggleAutomaticDashSubstitution:" target="Ady-hI-5gd" id="oCt-pO-9gS"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Smart Links" id="cwL-P1-jid">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="toggleAutomaticLinkDetection:" target="Ady-hI-5gd" id="Gip-E3-Fov"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Data Detectors" id="tRr-pd-1PS">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="toggleAutomaticDataDetection:" target="Ady-hI-5gd" id="R1I-Nq-Kbl"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Text Replacement" id="HFQ-gK-NFA">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="toggleAutomaticTextReplacement:" target="Ady-hI-5gd" id="DvP-Fe-Py6"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                </items>
-                                            </menu>
-                                        </menuItem>
-                                        <menuItem title="Transformations" id="2oI-Rn-ZJC">
-                                            <modifierMask key="keyEquivalentModifierMask"/>
-                                            <menu key="submenu" title="Transformations" id="c8a-y6-VQd">
-                                                <items>
-                                                    <menuItem title="Make Upper Case" id="vmV-6d-7jI">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="uppercaseWord:" target="Ady-hI-5gd" id="sPh-Tk-edu"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Make Lower Case" id="d9M-CD-aMd">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="lowercaseWord:" target="Ady-hI-5gd" id="iUZ-b5-hil"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Capitalize" id="UEZ-Bs-lqG">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="capitalizeWord:" target="Ady-hI-5gd" id="26H-TL-nsh"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                </items>
-                                            </menu>
-                                        </menuItem>
-                                        <menuItem title="Speech" id="xrE-MZ-jX0">
-                                            <modifierMask key="keyEquivalentModifierMask"/>
-                                            <menu key="submenu" title="Speech" id="3rS-ZA-NoH">
-                                                <items>
-                                                    <menuItem title="Start Speaking" id="Ynk-f8-cLZ">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="startSpeaking:" target="Ady-hI-5gd" id="654-Ng-kyl"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Stop Speaking" id="Oyz-dy-DGm">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="stopSpeaking:" target="Ady-hI-5gd" id="dX8-6p-jy9"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                </items>
-                                            </menu>
-                                        </menuItem>
-                                    </items>
-                                </menu>
-                            </menuItem>
-                            <menuItem title="Format" id="jxT-CU-nIS">
-                                <modifierMask key="keyEquivalentModifierMask"/>
-                                <menu key="submenu" title="Format" id="GEO-Iw-cKr">
-                                    <items>
-                                        <menuItem title="Font" id="Gi5-1S-RQB">
-                                            <modifierMask key="keyEquivalentModifierMask"/>
-                                            <menu key="submenu" title="Font" systemMenu="font" id="aXa-aM-Jaq">
-                                                <items>
-                                                    <menuItem title="Show Fonts" keyEquivalent="t" id="Q5e-8K-NDq"/>
-                                                    <menuItem title="Bold" tag="2" keyEquivalent="b" id="GB9-OM-e27"/>
-                                                    <menuItem title="Italic" tag="1" keyEquivalent="i" id="Vjx-xi-njq"/>
-                                                    <menuItem title="Underline" keyEquivalent="u" id="WRG-CD-K1S">
-                                                        <connections>
-                                                            <action selector="underline:" target="Ady-hI-5gd" id="FYS-2b-JAY"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem isSeparatorItem="YES" id="5gT-KC-WSO"/>
-                                                    <menuItem title="Bigger" tag="3" keyEquivalent="+" id="Ptp-SP-VEL"/>
-                                                    <menuItem title="Smaller" tag="4" keyEquivalent="-" id="i1d-Er-qST"/>
-                                                    <menuItem isSeparatorItem="YES" id="kx3-Dk-x3B"/>
-                                                    <menuItem title="Kern" id="jBQ-r6-VK2">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <menu key="submenu" title="Kern" id="tlD-Oa-oAM">
-                                                            <items>
-                                                                <menuItem title="Use Default" id="GUa-eO-cwY">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="useStandardKerning:" target="Ady-hI-5gd" id="6dk-9l-Ckg"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem title="Use None" id="cDB-IK-hbR">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="turnOffKerning:" target="Ady-hI-5gd" id="U8a-gz-Maa"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem title="Tighten" id="46P-cB-AYj">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="tightenKerning:" target="Ady-hI-5gd" id="hr7-Nz-8ro"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem title="Loosen" id="ogc-rX-tC1">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="loosenKerning:" target="Ady-hI-5gd" id="8i4-f9-FKE"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                            </items>
-                                                        </menu>
-                                                    </menuItem>
-                                                    <menuItem title="Ligatures" id="o6e-r0-MWq">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <menu key="submenu" title="Ligatures" id="w0m-vy-SC9">
-                                                            <items>
-                                                                <menuItem title="Use Default" id="agt-UL-0e3">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="useStandardLigatures:" target="Ady-hI-5gd" id="7uR-wd-Dx6"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem title="Use None" id="J7y-lM-qPV">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="turnOffLigatures:" target="Ady-hI-5gd" id="iX2-gA-Ilz"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem title="Use All" id="xQD-1f-W4t">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="useAllLigatures:" target="Ady-hI-5gd" id="KcB-kA-TuK"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                            </items>
-                                                        </menu>
-                                                    </menuItem>
-                                                    <menuItem title="Baseline" id="OaQ-X3-Vso">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <menu key="submenu" title="Baseline" id="ijk-EB-dga">
-                                                            <items>
-                                                                <menuItem title="Use Default" id="3Om-Ey-2VK">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="unscript:" target="Ady-hI-5gd" id="0vZ-95-Ywn"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem title="Superscript" id="Rqc-34-cIF">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="superscript:" target="Ady-hI-5gd" id="3qV-fo-wpU"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem title="Subscript" id="I0S-gh-46l">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="subscript:" target="Ady-hI-5gd" id="Q6W-4W-IGz"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem title="Raise" id="2h7-ER-AoG">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="raiseBaseline:" target="Ady-hI-5gd" id="4sk-31-7Q9"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem title="Lower" id="1tx-W0-xDw">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="lowerBaseline:" target="Ady-hI-5gd" id="OF1-bc-KW4"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                            </items>
-                                                        </menu>
-                                                    </menuItem>
-                                                    <menuItem isSeparatorItem="YES" id="Ndw-q3-faq"/>
-                                                    <menuItem title="Show Colors" keyEquivalent="C" id="bgn-CT-cEk">
-                                                        <connections>
-                                                            <action selector="orderFrontColorPanel:" target="Ady-hI-5gd" id="mSX-Xz-DV3"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem isSeparatorItem="YES" id="iMs-zA-UFJ"/>
-                                                    <menuItem title="Copy Style" keyEquivalent="c" id="5Vv-lz-BsD">
-                                                        <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
-                                                        <connections>
-                                                            <action selector="copyFont:" target="Ady-hI-5gd" id="GJO-xA-L4q"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Paste Style" keyEquivalent="v" id="vKC-jM-MkH">
-                                                        <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
-                                                        <connections>
-                                                            <action selector="pasteFont:" target="Ady-hI-5gd" id="JfD-CL-leO"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                </items>
-                                            </menu>
-                                        </menuItem>
-                                        <menuItem title="Text" id="Fal-I4-PZk">
-                                            <modifierMask key="keyEquivalentModifierMask"/>
-                                            <menu key="submenu" title="Text" id="d9c-me-L2H">
-                                                <items>
-                                                    <menuItem title="Align Left" keyEquivalent="{" id="ZM1-6Q-yy1">
-                                                        <connections>
-                                                            <action selector="alignLeft:" target="Ady-hI-5gd" id="zUv-R1-uAa"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Center" keyEquivalent="|" id="VIY-Ag-zcb">
-                                                        <connections>
-                                                            <action selector="alignCenter:" target="Ady-hI-5gd" id="spX-mk-kcS"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Justify" id="J5U-5w-g23">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="alignJustified:" target="Ady-hI-5gd" id="ljL-7U-jND"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Align Right" keyEquivalent="}" id="wb2-vD-lq4">
-                                                        <connections>
-                                                            <action selector="alignRight:" target="Ady-hI-5gd" id="r48-bG-YeY"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem isSeparatorItem="YES" id="4s2-GY-VfK"/>
-                                                    <menuItem title="Writing Direction" id="H1b-Si-o9J">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <menu key="submenu" title="Writing Direction" id="8mr-sm-Yjd">
-                                                            <items>
-                                                                <menuItem title="Paragraph" enabled="NO" id="ZvO-Gk-QUH">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                </menuItem>
-                                                                <menuItem id="YGs-j5-SAR">
-                                                                    <string key="title">	Default</string>
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="makeBaseWritingDirectionNatural:" target="Ady-hI-5gd" id="qtV-5e-UBP"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem id="Lbh-J2-qVU">
-                                                                    <string key="title">	Left to Right</string>
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="makeBaseWritingDirectionLeftToRight:" target="Ady-hI-5gd" id="S0X-9S-QSf"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem id="jFq-tB-4Kx">
-                                                                    <string key="title">	Right to Left</string>
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="makeBaseWritingDirectionRightToLeft:" target="Ady-hI-5gd" id="5fk-qB-AqJ"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem isSeparatorItem="YES" id="swp-gr-a21"/>
-                                                                <menuItem title="Selection" enabled="NO" id="cqv-fj-IhA">
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                </menuItem>
-                                                                <menuItem id="Nop-cj-93Q">
-                                                                    <string key="title">	Default</string>
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="makeTextWritingDirectionNatural:" target="Ady-hI-5gd" id="lPI-Se-ZHp"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem id="BgM-ve-c93">
-                                                                    <string key="title">	Left to Right</string>
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="makeTextWritingDirectionLeftToRight:" target="Ady-hI-5gd" id="caW-Bv-w94"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                                <menuItem id="RB4-Sm-HuC">
-                                                                    <string key="title">	Right to Left</string>
-                                                                    <modifierMask key="keyEquivalentModifierMask"/>
-                                                                    <connections>
-                                                                        <action selector="makeTextWritingDirectionRightToLeft:" target="Ady-hI-5gd" id="EXD-6r-ZUu"/>
-                                                                    </connections>
-                                                                </menuItem>
-                                                            </items>
-                                                        </menu>
-                                                    </menuItem>
-                                                    <menuItem isSeparatorItem="YES" id="fKy-g9-1gm"/>
-                                                    <menuItem title="Show Ruler" id="vLm-3I-IUL">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="toggleRuler:" target="Ady-hI-5gd" id="FOx-HJ-KwY"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Copy Ruler" keyEquivalent="c" id="MkV-Pr-PK5">
-                                                        <modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
-                                                        <connections>
-                                                            <action selector="copyRuler:" target="Ady-hI-5gd" id="71i-fW-3W2"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Paste Ruler" keyEquivalent="v" id="LVM-kO-fVI">
-                                                        <modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
-                                                        <connections>
-                                                            <action selector="pasteRuler:" target="Ady-hI-5gd" id="cSh-wd-qM2"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                </items>
-                                            </menu>
-                                        </menuItem>
-                                    </items>
-                                </menu>
-                            </menuItem>
                             <menuItem title="View" id="H8h-7b-M4v">
                                 <modifierMask key="keyEquivalentModifierMask"/>
                                 <menu key="submenu" title="View" id="HyV-fh-RgO">
@@ -685,9 +224,9 @@
         <!--Window Controller-->
         <scene sceneID="wc9-ue-Eil">
             <objects>
-                <windowController id="UFt-7I-hit" sceneMemberID="viewController">
-                    <window key="window" title="Preferences" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" oneShot="NO" releasedWhenClosed="NO" showsToolbarButton="NO" visibleAtLaunch="NO" frameAutosaveName="" animationBehavior="default" id="5zN-Bj-JVR" userLabel="Preferences">
-                        <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES"/>
+                <windowController showSeguePresentationStyle="single" id="UFt-7I-hit" customClass="PreferencesWindowController" customModule="MetaballsKit" sceneMemberID="viewController">
+                    <window key="window" title="Preferences" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" restorable="NO" oneShot="NO" releasedWhenClosed="NO" showsToolbarButton="NO" visibleAtLaunch="NO" frameAutosaveName="" animationBehavior="default" id="5zN-Bj-JVR" userLabel="Preferences">
+                        <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES"/>
                         <windowPositionMask key="initialPositionMask" leftStrut="YES" rightStrut="YES" topStrut="YES" bottomStrut="YES"/>
                         <rect key="contentRect" x="196" y="240" width="480" height="270"/>
                         <rect key="screenRect" x="0.0" y="0.0" width="1440" height="878"/>
diff --git a/MetaballsKit/Preferences.swift b/MetaballsKit/Preferences.swift
new file mode 100644
index 0000000..99ffc68
--- /dev/null
+++ b/MetaballsKit/Preferences.swift
@@ -0,0 +1,9 @@
+//
+//  Preferences.swift
+//  Metaballs
+//
+//  Created by Eryn Wells on 8/14/17.
+//  Copyright © 2017 Eryn Wells. All rights reserved.
+//
+
+import Foundation
diff --git a/MetaballsKit/PreferencesWindowController.swift b/MetaballsKit/PreferencesWindowController.swift
new file mode 100644
index 0000000..25a244f
--- /dev/null
+++ b/MetaballsKit/PreferencesWindowController.swift
@@ -0,0 +1,15 @@
+//
+//  PreferencesWindowController.swift
+//  Metaballs
+//
+//  Created by Eryn Wells on 8/15/17.
+//  Copyright © 2017 Eryn Wells. All rights reserved.
+//
+
+import Cocoa
+
+class PreferencesWindowController: NSWindowController {
+    override func prepare(for segue: NSStoryboardSegue, sender: Any?) {
+        print("prepare for segue:\(segue), sender:\(String(describing: sender))")
+    }
+}