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 modcursor                                                             QWIKC
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 Function       Modifies the current cursor mode to turn on, off, or blink
                erratically.
 Syntax         void modcursor( int bits13and14 );
 Remarks        Using the modification macros cursor_on, cursor_off, or
                cursor_blink for bits13and14, the currently viewed cursor
                mode on the CRT will be modified accordingly.  The function
                only looks at bits 13 and 14 of bits13and14 for the
                modification.  The scan lines remain unaltered.
 Return value   None.
 Screens        Any video page as viewed.
 Example        To turn the current cursor mode off:

                  modcursor( cursor_off );