Copies items into the clipboard.
Copies specified range of text into the clipboard. If extend is not #f, the old clipboard contents are appended. If start or end is -1, then the current selection start/end is used.
See Cut and Paste for a discussion of the time argument.
Copies the selected items into the clipboard. If extend is not #f, the old clipboard contents are appended.
See Cut and Paste for a discussion of the time argument.