Running the encoder with no options gives you the following, not the last line in particular.
Script Commands:
ALT [key name] (ex: ALT F4, ALT SPACE)
CTRL | CONTROL [key name] (ex: CTRL ESC)
CTRL-ALT [key name] (ex: CTRL-ALT DEL)
CTRL-SHIFT [key name] (ex: CTRL-SHIFT ESC)
DEFAULT_DELAY | DEFAULTDELAY [Time in millisecond * 10] (change the delay bet
DELAY [Time in millisecond * 10] (used to overide temporary the default delay
GUI | WINDOWS [key name] (ex: GUI r, GUI l)
REM [anything] (used to comment your code, no obligation :) )
ALT-SHIFT (swap language)
SHIFT [key name] (ex: SHIFT DEL)
STRING [any character of your layout]
REPEAT [Number] (Repeat last instruction N times)
[key name] (anything in the keyboard.properties)
I changed it to use CONTROL (and like CTRL) and again it encodes with no problem but it allows the PC to timeout and lock. The language is US and it matches the keyboard. As for other key combinations it needs to be something that is less intrusive when I am using the PC and typing.