Syntax:
Then: aa = FILENAME(handle)
Return value
The filename of the specified handle.
Version Ref: 5.0
Description:
Returns the filename of the specified handle.
The handle must be a value returned from OPEN() or CREATE().Invalid handles return null.
Example:
handle = CREATE("/tmp/tempfile");
...
name = FILENAME(handle)
NOTE:
This is useful in generic CALL routines where the filename isn't known. In a text file, it is possible that the value returned by FILESIZE() is not the same number of bytes that can be read from the file.