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WAIT - a control flow statement that suspends program execution while
       monitoring the status of a machine input port
 
Syntax
  WAIT portnumber,and-expression[,xor-expression]
    ■ portnumber, a numeric expression that has an integer value between
      0 and 255, is the number of the machine input port
    ■ and-expression is an integer expression that is combined with the
      data at the port with an AND operation. Only if the result is
      non-zero will the WAIT statement pass control to the next
      statement in the program.
    ■ xor-expression is a ◄Detail►
 
See Also  ◄INP►  ◄OUT►