Stop Signal Random Time

If I'm not mistaken, this selects a random number between 100 and 450, in intervals of 50, for the variable $nogodelay.

You can get lots of very helpful info on the scripting functions by clicking the "scripting syntax tab" link above the scripting box in Psytoolkit (leads to this page: www.psytoolkit.org/doc2.6.1/syntax.html). Very helpful for learning about scripting.