Checking parallelism PROBLEM... (SOLVED!)

[Spybot]

Hi Han!

OK, so what is a CAS-Program? what are CAS commands? and what are Non-CAS commands? Do we have a list indicating which commands are CAS and which are not? I just wanna know if the lines are parallel, I'm not trying to draw anything, that's just the way the command reference says the syntax for this particular command should be! but now it turns into something much more complicated thing! all I'd like to know is how do I make this command to work from inside of a program.

Thank you!

Spybot.