1.2. Window and file numbers

Many commands and macros enable you to specify a window number (windowid) or file number (fileid). The number identifies a window or file to which any output is sent. You must use a number in the range 50 to 1024.


When a user-defined number is in use for a window or a file, that number cannot be reused until you close the associated window or file. Either:

  • use the VCLOSE command to close both windows and files at the command line

  • use the fclose predefined macro to close a file from within a macro.

To see what windows and files you have opened, use the WINDOW command.

See also:

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