The UPDATE procedure writes the contents of the file buffer into
the current component.
Syntax:
UPDATE( file_variable[[, ERROR := error-recovery]] );
The 'file_variable' is the name of the file variable associated
with the file whose component is to be updated.
The 'error-recovery' specifies the action to be taken if an
error occurs during execution of the routine. By default, after
the first error, the error message is printed and execution is
stopped.
The file must be in inspection mode before UPDATE is called; it
remains in that mode after the procedure's execution.
The UPDATE procedure is legal for files that have been opened
for random access ("direct" or "keyed"). The current component
must already have been locked by a successful FIND, FINDK, GET,
RESET, or RESETK procedure before the contents of the file
buffer can be rewritten into it. After the update has taken
place, the component is unlocked and UFB returns TRUE.
See the "HP Pascal Language Reference Manual" for complete
information on the UPDATE procedure.