The WorkStack specification allows you to change the size of the work stack, which keeps track of temporary variables that are passed and localized during user- defined function calls, concatenations, or complex expressions.
The following environmental variables may be used to check your workstacks during a BR! session.
Also the command STATUS STACKS shows the current stack settings.
WorkStack 500000 (version 4.3+)
"Integer" is a whole number that represents the number of bytes that the work stack may contain. It must be greater than 499 and may be arbitrarily high (e.g. up to 99 million bytes).