This is getting silly and I'm not here to argue. For anyone who actually wants to have a way to turn on and off a block of debugging lines, just enclose them in a Repeat block as shown. Personally, I use a debug flag variable as shown in the first example with Repeat While so you can turn on and off debugging code in a program just by changing the debug flag variable manually from 0 to 1. However, if you just want a simpler and somewhat safer way to stop execution of a block of lines,