The CONTROL statement sends control information to an interface or an I/O path control register. Information is sent by specifying a starting register number, and a value to be sent to that register. If it is not specified, the starting register number is zero. If you specify more than one data value, the register number is incremented by one after sending each value. For example:
CONTROL 2;Column,Line
This sends two values on interface number 2: the value of the variable Column to register 0, and the value of the variable Line to register 1.
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