todo

TODO

 immediate:
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+x11vnc: clipboard, cursor, updates interruptible by input
 extra_bytes in rfbDrawCharWithClip.
-in keysym tested mouse buttons make copy rect, but text is not marked as mod.
+tested mouse buttons make copy rect, but text is not marked as mod.
 cursor drawing: set optional grain to mark bigger rectangles as drawn (else
 	you end up with thousands of one-pixel-rectangles to encode).
 selectbox: scroll bars