Tips for Golfing in Vitsy While there are only a few users of the Vitsy programming language right now, I wish to create a place for tips for golfing in Vitsy.

What general tips do you have for golfing in Vitsy? I'm looking for ideas that can be applied to code golf problems in general that are at least somewhat specific to Vitsy (e.g. "remove NOPs" is not an answer). Please post one tip per answer.

For reference, the online interpreter is here, the esolang page is here, and you can receive answer-per-answer help here.
Do not doubt the power of m

Background: Fm calls the a specified line index in the current Vitsy class. (F is the line index you seek).

The m command (method) has saved me literally hundreds of bytes in the past. Any algorithm that uses repeated steps, or a common character sequence (such as D1M- (floor algorithm)).

This is extremely helpful in repetitive kolmogorov complexity challenges.

Instead of:

WD1M-(something else here)WD1M-(something different)WD1M-l\[NaO]

Use:

1m(something else here)1m(something different)1ml\[NaO]
WD1M-

(floor(prompt))

Also, you can return from method statements with ;, allowing for looping until condition(s) (over the general [  ] syntax, which isn't as powerful):

1mN
&lt;;)

(loops through code until finding non-zero, popping it from the stack and returning to first line)