4. Others.

  -PrintScreen key.
#ifdef WXE
   .PrtScr:wxe   screen print, Shift+PrtScr:file print, Ctrl+PrtScr:wxe hardcopy.
#else   //XXE
   .PrtScr:gnome screen print, Shift+PrtScr:file print, Ctrl+PrtScr:gxe hardcopy.
#endif
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