1 -*- mode: outline; coding: utf-8 -*-

     2 

     3 * MS Windows.

     4 

     5 * X Windows.

     6 

     7 X11 selection transfers (which both PRIMARY and CLIPBOARD are instances of)

     8 are done through synthesized X11 events and properties changes.

     9 

    10 The messages used to transfer the selections have a maximum size that's

    11 actually quite low (a few kilobytes).

    12 

    13 See

    14 

    15   http://standards.freedesktop.org/clipboards-spec/clipboards-latest.txt

    16   http://www.jwz.org/doc/x-cut-and-paste.html

    17   http://en.wikipedia.org/wiki/X_Window_selection

    18   http://www.emacswiki.org/cgi-bin/wiki/CopyAndPaste

    19 

    20 ** xclipboard.

    21 

    22 The xclipboard command emulates the traditional Macintosh style clipboard by

    23 claiming ownership of the CLIPBOARD selection and answering any requests for

    24 its value. When it loses the selection, it immediately asks the new owner for

    25 the value of the CLIPBOARD selection, makes a local copy, and then reasserts

    26 ownership of the CLIPBOARD. This way the clipboard contents can persist after

    27 the original application has exited.

    28