Description:
UPDATE repaints the window to bring it up to date with the data in the mapped
buffer. The screen manager is only called before user input is required. The
call UPDATE (ALL) is equivalent to calling the screen manager. The difference
between the UPDATE (ALL) and the REFRESH built-in is that REFRESH erases the
screen and repaints the screen from scratch while UPDATE and the screen manager use
a queued request system to only update the parts of the screen that are needed.
Syntax:
UPDATE ( {ALL | window} )
Example:
The following updates the current window as defined by the nu/TPU
CURRENT_WINDOW built-in.
UPDATE (CURRENT_WINDOW);
Errors:
TPU$_BADKEY Only ALL is allowed.
TPU$_UNKKEYWORD Keyword not recognized.
TPU$_WINDNOTMAPPED Window must be mapped to update.
Related Builtins:
UPDATE