The Clipboard class implements a basic buffering scheme for text. The currently selected text is also exported to the OS so that text can be copied from and to other applications. Commonly only a single instance is used (the default clipboard) but applications are free to use other than the default clipboard if necessary.

	initialize
	initialize

	primitives
	primitiveClipboardText primitiveClipboardText:

	private
	noteRecentClipping:

	instance creation
	new

	accessing	top
	chooseRecentClipping Clipboard chooseRecentClipping
	clipboardText Return the text currently in the clipboard. If the system clipboard is empty, or if it differs from the Smalltalk clipboard text, use the Smalltalk clipboard. This is done since (a) the Mac clipboard gives up on very large chunks of text and (b) since not all platforms support the notion of a clipboard.
	clipboardText: Set text currently on the clipboard. Also export to OS

	initialize	top
	initialize

	primitives	top
	primitiveClipboardText Get the current clipboard text. Return the empty string if the primitive fails.
	primitiveClipboardText: Set the current clipboard text to the given string.

	private	top
	noteRecentClipping: Keep most recent clippings in a queue for pasteRecent (paste... command)

	accessing	top
	chooseRecentClipping Clipboard chooseRecentClipping
	clipboardText Clipboard clipboardText
	clipboardText:
	default
	default: So that clients can switch between different default clipboards

	instance creation	top
	new Answer a new instance of the receiver (which is a class) with no indexable variables. Fail if the class is indexable.