Because system global variables are hard-coded into a procedure, you cannot change or delete status information for the system global variable. Under some circumstances, however, you can change the value of the system global variable. You cannot change the name of a system global variable.
The global variables defined for host QMF are recognized by QMF for Windows, but may not apply to QMF for Windows. Any references to queries, forms or procedures to QMF host global variables that are not supported by QMF for Windows are ignored. Only the variables listed below are used and are accessible by QMF for Windows. If QMF for Windows does not recognize a global variable it will be used as a substitution variable at run time.
Global variables prefixed with DSQQW are QMF for Windows global variables. All other global variables prefixed with DSQ are supported by QMF for Windows and host QMF.