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@O: Open output file (global scope)

A statement of the form

@O new_output_file_name

changes the name of FTANGLE's output file. This change remains in effect for the duration of the file, or until another @O is encountered. (If that occurs, the previously open file is closed.)

This command is expanded during output, so it must appear in the code part.

For an example of using the @O command to produce both C header files (.h) and source files (.c), see the discussion in Outer macros.

To change the name of the output file locally (for just the present section), see ATo.