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 qreadchar                                                             QWIKC
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 Function       Reads a character from the current screen.
 Syntax         unsigned char qreadchar( unsigned char row,
                                         unsigned char col );
 Remarks        Reads a character from the screen at just one location.
 Return value   qreadchar returns the character read from the screen.
 Screens        All video pages and virtual screens.
 EOS            Unaltered.