h.ow

强大的数学工具包

                               * * * * * * *
                               *    ow     *
                               * * * * * * *


        "owoff"         disables the overwrite protection mechanism.

        "owon"          enables the overwrite protection mechanism.


        By default, it is enabled.
        owon and owoff cannot be used in loops. 
        In loops, the overwrite protection mechanism is enabled.