Initializing help system before first use

getfid

Purpose
Get the stream number of the active input, output or error stream.
Synopsis
function getfid(stream:integer):integer
Argument
stream 
The stream to query:
F_INPUT 
Input stream
F_OUTPUT 
Output stream
F_ERROR 
Error stream
Return value
Stream number.
Further information
The returned value can be used as parameter for the function fselect.
Related topics
fselect, getfname.

Parent Topic Predefined functions and procedures

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