You might laugh but if you master CTRL-C, CTRL-X and CTRL-P with some use of a shift key and arrows you can save yourself from Carpel Tunnel and tendinits. Save your key strokes and maneuvers with he mouse and make it so you're less tired...

- command that functions in almost every Windows screen possible -
Shift Arrow up or Shift Arrow Down will select multiple lines, characters up down left and right
Then:
CTRL C - Copy
or
CTRL X - Cut

and then
CTRL V - Paste