when I try to enter a variable I need the $ char. I use hungarian keyboard, and $ is AltGr + É keyboard combination. The only annoying thing is when I press AltGr + É, $ appears, but just before that cursor jumps to the first row first char position. So $ is smiling  as the first char in the first row. No other keboard combination does that, only AltGr + É. So every time I need a variable I use clipboard instead of pressing $ char.