I already know that you can copy something to the a register using: (plus a yank, delete, etc. command)
I also understand that you can append to the a register using:
In addition I understand how to copy something to the clipboard register using:
What do I type to append to the clipboard register?
My vim version:
VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Jan 2 2014 19:39:59) Huge version with GTK2 GUI.