http://bugs.winehq.org/show_bug.cgi?id=2687
------- Additional Comments From ulrich.czekalla@utoronto.ca 2005-11-02 10:52 ------- UsePrimary is the only clipboard specific parameter.
UsePrimary tells wine to grab the primary selection in addition to the clipboard selection when ever it takes ownership of the clipboard. This allows you to paste text into applications that don't support clipboard selection, for example xterm.
When pasting data from a non-Wine application, it indicates that it should first fetch data from the primary selection if available, otherwise read the clipboard selection. Again, this allows you to paste data from non-Wine applications that don't support clipboard selection.