Simple Textoutput for Debugging-Resons?

Is it possible, to get a simple textoutput of declared variables for debugging reasons?
E.g. if I try to code a card, that I get an output of Register(1), so I can see if I used the correct filters etc?
E.g. if I try to code a card, that I get an output of Register(1), so I can see if I used the correct filters etc?