OPTION BREAK nn
Set the value of the break key to the ASCII value nn. This key is used to
interrupt a running program.
The value of the break key is set to CTRL-C key at power upand when a
program is run but it can be changed to any keyboard key using this
command in a program (for example, OPTION BREAK 4 will set the break
key to the CTRL-D key). Setting this option to zero 0 will disable the break
function entirely.