System Function WA

Z←⎕WA returns the amount of workspace available to store data.

Z is an integer scalar which represents the amount in bytes of workspace available to store data.

The value returned by this function does not represent the amount of contiguous memory available because memory may be fragmented by unmovable entries. Also, due to internal allocations for various purposes, this value might vary from time to time even though there is no user-initiated change in data storage.