diff --git a/sc/Document.sc b/sc/Document.sc
new file mode 100644
index 0000000..8e3d7b1
--- /dev/null
+++ b/sc/Document.sc
@@ -0,0 +1,587 @@
+// Since SC v3.2 dev, Document is an ABSTRACT class. Can't be instantiated directly.
+// Subclasses provide the editor-specific implementation, e.g. CocoaDocument for the standard Mac interface.
+// Subclasses also (in their SC code files) add a "implementationClass" method to Document to tell it to use them.
+
+Document {
+
+	classvar <dir="", <allDocuments, >current;
+	classvar <globalKeyDownAction, <globalKeyUpAction, <>initAction;
+
+	classvar <>autoRun = true;
+
+	classvar <>implementationClass;
+
+	//don't change the order of these vars:
+	var <dataptr, <>keyDownAction, <>keyUpAction, <>mouseUpAction;
+	var <>toFrontAction, <>endFrontAction, <>onClose, <>mouseDownAction;
+
+	var <stringColor;
+
+	var <envir, savedEnvir;
+	var <editable;
+
+	*initClass{
+		allDocuments = [];
+	}
+
+	*startup {
+		var num, doc;
+		num = this.numberOfOpen;
+		num.do { | i |
+			doc = this.newFromIndex(i);
+		};
+	}
+
+	*open { | path, selectionStart=0, selectionLength=0, envir |
+		var doc = Document.implementationClass.prBasicNew.initFromPath(path, selectionStart, selectionLength);
+		if (envir.notNil and: { doc.notNil }) { doc.envir_(envir) };
+		^doc
+	}
+
+	*new { | title="Untitled", string="", makeListener=false, envir |
+		var doc = Document.implementationClass.new(title, string, makeListener);
+		if (envir.notNil and: { doc.notNil }) { doc.envir_(envir) };
+		^doc
+	}
+
+	*dir_ { | path |
+		path = path.standardizePath;
+		if(path == "") { dir = path } {
+			if(pathMatch(path).isEmpty) { ("there is no such path:" + path).postln } {
+				dir = path ++ "/"
+			}
+		}
+	}
+
+	*standardizePath { | p |
+		var pathName;
+		pathName = PathName(p.standardizePath);
+		^if(pathName.isRelativePath) {
+			dir  ++ pathName.fullPath
+		} {
+			pathName.fullPath
+		}
+	}
+	*abrevPath { | path |
+		if(path.size < dir.size) { ^path };
+		if(path.copyRange(0,dir.size - 1) == dir) {
+			^path.copyRange(dir.size, path.size - 1)
+		};
+		^path
+	}
+
+	*openDocuments {
+		^allDocuments
+	}
+
+	*hasEditedDocuments {
+		allDocuments.do { | doc, i |
+			if(doc.isEdited) {
+				^true;
+			}
+		}
+		^false
+	}
+
+	*closeAll { | leavePostWindowOpen = true |
+		allDocuments.do { | doc, i |
+			if(leavePostWindowOpen.not) {
+				doc.close;
+			} {
+				if(doc.isListener.not) {
+					doc.close;
+				}
+			}
+		}
+	}
+
+	*closeAllUnedited { | leavePostWindowOpen = true |
+		var listenerWindow;
+		allDocuments.do({ | doc, i |
+			if(doc.isListener,{
+				listenerWindow = doc;
+			},{
+				if(doc.isEdited.not, {
+					doc.close;
+					});
+			})
+		});
+		if(leavePostWindowOpen.not, {
+			listenerWindow.close;
+		})
+	}
+
+	*globalKeyDownAction_ {|action|
+		globalKeyDownAction = action;
+		this.implementationClass.prGlobalKeyDownAction_(action);
+	}
+
+	*prGlobalKeyDownAction_ { }
+
+	*globalKeyUpAction_ {|action|
+		globalKeyUpAction = action;
+		this.implementationClass.prGlobalKeyUpAction_(action);
+	}
+
+	*prGlobalKeyUpAction_ { }
+
+	*current {
+		if ( thisProcess.platform.hasFeature( \emacs ), {
+			^this.implementationClass.current;
+		});
+		^current;
+	}
+
+	*listener {
+		var index = this.prGetIndexOfListener;
+		if (index.notNil) {
+			^allDocuments[index];
+		} {
+			^nil
+		}
+	}
+
+	isListener {
+		var index = this.class.prGetIndexOfListener;
+		if (index.notNil) {
+			^allDocuments.indexOf(this) == index
+		} {
+			^False
+		}
+	}
+
+// document setup
+
+	path {
+		^this.prGetFileName
+	}
+	path_ { |apath|
+		this.prSetFileName(apath);
+	}
+	dir {
+		var path = this.path;
+		^path !? { path.dirname }
+	}
+	name {
+		^this.title
+	}
+
+	name_ { |aname|
+		this.title_(aname)
+	}
+
+	title {
+		^this.prGetTitle
+	}
+
+	title_ { | argName |
+		this.prSetTitle(argName);
+	}
+
+	bounds {
+		^this.prGetBounds(Rect.new);
+	}
+	bounds_ { | argBounds |
+		^this.prSetBounds(argBounds);
+	}
+
+// interaction:
+	close {
+		this.prclose
+	}
+
+	front {
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	unfocusedFront {
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	alwaysOnTop_ { |boolean=true|
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	alwaysOnTop {
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	selectLine { | line |
+		this.prSelectLine(line);
+	}
+
+	selectRange { | start=0, length=0 |
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	editable_ { | abool=true |
+		editable = abool;
+		this.prIsEditable_(abool);
+	}
+	removeUndo {
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	promptToSave_ { | bool |
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	promptToSave {
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	underlineSelection {
+		^this.subclassResponsibility(thisMethod)
+	}
+
+// state info
+	isEdited {
+		^this.subclassResponsibility(thisMethod)
+	}
+	isFront {
+		^Document.current === this
+	}
+
+	selectionStart {
+		^this.selectedRangeLocation
+	}
+
+	selectionSize {
+		^this.selectedRangeSize
+	}
+
+	string { | rangestart, rangesize = 1 |
+		if(rangestart.isNil,{
+		^this.text;
+		});
+		^this.rangeText(rangestart, rangesize);
+	}
+
+	string_ { | string, rangestart = -1, rangesize = 1 |
+		this.insertTextRange(string, rangestart, rangesize);
+	}
+	selectedString {
+		^this.selectedText
+	}
+
+
+	font_ { | font, rangestart = -1, rangesize=0 |
+		this.setFont(font, rangestart, rangesize)
+	}
+
+	selectedString_ { | txt |
+		this.prinsertText(txt)
+	}
+
+	currentLine {
+		^this.getSelectedLines(this.selectionStart, 0);
+	}
+
+	getSelectedLines { | rangestart = -1, rangesize = 0 |
+		var start, end, str, max;
+		str = this.string;
+		max = str.size;
+		start = rangestart;
+		end = start + rangesize;
+		while {
+			str[start] !== Char.nl and: { start >= 0 }
+		} { start = start - 1 };
+		while {
+			str[end] !== Char.nl and: { end < max }
+		} { end = end + 1 };
+		^str.copyRange(start + 1, end);
+	}
+
+//actions:
+
+	didBecomeKey {
+		this.class.current = this;
+		this.saveCurrentEnvironment;
+		toFrontAction.value(this);
+	}
+
+	didResignKey {
+		endFrontAction.value(this);
+		this.restoreCurrentEnvironment;
+	}
+
+	mouseUp{ | x, y, modifiers, buttonNumber, clickCount, clickPos |
+		mouseUpAction.value(this, x, y, modifiers, buttonNumber, clickCount)
+	}
+
+	keyDown { | character, modifiers, unicode, keycode |
+		this.class.globalKeyDownAction.value(this,character, modifiers, unicode, keycode);
+		keyDownAction.value(this,character, modifiers, unicode, keycode);
+	}
+
+	keyUp { | character, modifiers, unicode, keycode |
+		this.class.globalKeyUpAction.value(this,character, modifiers, unicode, keycode);
+		keyUpAction.value(this,character, modifiers, unicode, keycode);
+	}
+
+	== { | doc |
+		^if(this.path.isNil or: { doc.path.isNil }) { doc === this } {
+			this.path == doc.path
+		}
+	}
+
+	hash {
+		^(this.path ? this).hash
+	}
+
+	*defaultUsesAutoInOutdent_ {|bool|
+		Document.implementationClass.prDefaultUsesAutoInOutdent_(bool)
+	}
+
+	usesAutoInOutdent_ {|bool|
+		this.prUsesAutoInOutdent_(bool)
+	}
+
+	*prDefaultUsesAutoInOutdent_{|bool|
+		this.subclassResponsibility(thisMethod);
+	}
+
+	*prPostColor_{ |color|
+		this.subclassResponsibility(thisMethod);
+	}
+
+	prUsesAutoInOutdent_{|bool|
+		^this.subclassResponsibility(thisMethod);
+	}
+
+
+// private implementation
+
+	prIsEditable_{ | editable=true |
+		^this.subclassResponsibility(thisMethod)
+	}
+	prSetTitle { | argName |
+		^this.subclassResponsibility(thisMethod)
+	}
+	prGetTitle {
+		^this.subclassResponsibility(thisMethod)
+	}
+	prGetFileName {
+		^this.subclassResponsibility(thisMethod)
+	}
+	prSetFileName { | apath |
+		^this.subclassResponsibility(thisMethod)
+	}
+	prGetBounds { | argBounds |
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	prSetBounds { | argBounds |
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	text {
+		^this.subclassResponsibility(thisMethod)
+	}
+	selectedText {
+		^this.subclassResponsibility(thisMethod)
+	}
+	selectUnderlinedText { | clickPos |
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	linkAtClickPos { | clickPos |
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	rangeText { | rangestart=0, rangesize=1 |
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	prclose {
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	closed {
+		onClose.value(this); // call user function
+		this.restoreCurrentEnvironment;
+		allDocuments.remove(this);
+		dataptr = nil;
+	}
+
+	prinsertText { | dataPtr, txt |
+		^this.subclassResponsibility(thisMethod)
+	}
+	insertTextRange { | string, rangestart, rangesize |
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	prAdd {
+		allDocuments = allDocuments.add(this);
+		this.editable = true;
+		if (autoRun) {
+			if (this.rangeText(0,7) == "/*RUN*/")
+			{
+				this.text.interpret;
+			}
+		};
+		current = this;
+		initAction.value(this);
+
+	}
+
+	//this is called after recompiling the lib
+	*prnumberOfOpen {
+		^this.subclassResponsibility(thisMethod)
+	}
+	*numberOfOpen {
+		thisProcess.platform.when(\_NumberOfOpenTextWindows) {
+			^this.prnumberOfOpen
+		} { ^allDocuments.size };
+		^0
+	}
+
+	*newFromIndex { | idx |
+		^super.new.initByIndex(idx)
+	}
+	initByIndex { | idx |
+		//allDocuments = allDocuments.add(this);
+		var doc;
+		doc = this.prinitByIndex(idx);
+		if(doc.isNil,{^nil});
+		this.prAdd;
+	}
+	prinitByIndex { | idx |
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	//this is called from the menu: open, new
+	*prGetLast {
+		^Document.implementationClass.prBasicNew.initLast
+	}
+
+	initLast {
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	prGetLastIndex {
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	// private open
+	initFromPath { | path, selectionStart, selectionLength |
+		var stpath;
+	//	path = apath;
+		stpath = this.class.standardizePath(path);
+		this.propen(stpath, selectionStart, selectionLength);
+		if(dataptr.isNil,{
+			this.class.allDocuments.do{ |d|
+					if(d.path == stpath.absolutePath){
+						^d
+					}
+				};
+			^nil
+		});
+		this.background_(Color.white);
+		^this.prAdd;
+	}
+	propen { | path, selectionStart=0, selectionLength=0 |
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	// private newTextWindow
+	initByString{ | argTitle, str, makeListener |
+
+		this.prinitByString(argTitle, str, makeListener);
+		this.background_(Color.white);
+		if(dataptr.isNil,{^nil});
+		this.prAdd;
+		this.title = argTitle;
+
+	}
+	prinitByString { | title, str, makeListener |
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	// other private
+	// if -1 whole doc
+
+	prSetBackgroundColor { | color |
+		^this.subclassResponsibility(thisMethod)
+	}
+	prGetBackgroundColor { | color |
+		^this.subclassResponsibility(thisMethod)
+	}
+	prSetSelectedBackgroundColor { | color |
+		^this.subclassResponsibility(thisMethod);
+	}
+	prGetSelectedBackgroundColor { | color |
+		^this.subclassResponsibility(thisMethod);
+	}
+	selectedRangeLocation {
+		^this.subclassResponsibility(thisMethod)
+	}
+	selectedRangeSize {
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	prSelectLine { | line |
+		^this.subclassResponsibility(thisMethod)
+	}
+
+	*prGetIndexOfListener {
+		if (this.implementationClass.isNil) {
+			^nil
+		};
+
+		if (this.implementationClass.respondsTo(\prGetIndexOfListener)) {
+			^this.implementationClass.prGetIndexOfListener
+		} {
+			^nil
+		}
+	}
+
+	//---not yet implemented
+	// ~/Documents
+	// /Volumes
+	// Music/Patches
+
+	//*reviewUnsavedDocumentsWithAlertTitle
+	//*saveAllDocuments
+	//*recentDocumentPaths
+	//save
+	//saveAs
+	//print
+	//
+	//hasPath  was loaded
+
+
+// Environment handling  Document with its own envir must set and restore currentEnvironment on entry and exit.
+// Requires alteration of *open, *new, closed, didBecomeKey, and didResignKey
+
+	envir_ { | ev |
+		envir = ev;
+		if (this.class.current == this) {
+			if(envir.isNil) {
+				this.restoreCurrentEnvironment
+			} {
+				if (savedEnvir.isNil) {
+					this.saveCurrentEnvironment
+				}
+			}
+		}
+	}
+
+	restoreCurrentEnvironment {
+		if (savedEnvir.notNil) {
+			currentEnvironment = savedEnvir;
+			savedEnvir = nil;
+		}
+	}
+
+	saveCurrentEnvironment {
+		if (envir.notNil) {
+			savedEnvir = currentEnvironment;
+			currentEnvironment = envir;
+		}
+	}
+
+	*prBasicNew {
+		^super.new
+	}
+}