The WriteMode( archive, mode) calling sequence displays or modifies read-write mode of a library specified in archive. For more details on library read-write mode, see march.

If archive is a directory, the read-write modes of all the libraries in that directory are displayed. Otherwise, if archive is a file that is a Maple library (has the extension .lib or .mla), only the read-write mode of that library is displayed. An error is raised if the path specified by archive does not exist.

The optional mode specifies the new read-write mode to be assigned to the library and the new mode is displayed. When mode is not given, the read-write mode of the library is displayed but remains unchanged.