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.BYVAL Clausei

BYVAL Clause
Syntax
  BYVAL variable [AS type]
The BYVAL attribute in the parameter list of a DECLARE statement causes
the value of the specified variable to be passed to the procedure, rather
than the variable's address. BYVAL can only be used in DECLARE statements
for non-BASIC procedures, and cannot be applied to string parameters.
See Also  CALLS or CALL (Non-BASIC) statements