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POKE                     Write Byte to Memory

 POKE address,byte

    Writes a specified byte at a specified memory offset within the
    current segment.

     address    A numeric expression in the range 0 to 1048575; specifies
                a decimal offset within the segment specified by the most
                recent DEF SEG statement. If there has been no DEF SEG
                statement, the offset is within QuickBASIC's data segment.

        byte    A numeric expression in the range 0 to 255; specifies the
                data to be written at offset address.