PRINTREADY()
 Determines if a particular printer is ready
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 Syntax

     PRINTREADY([<nPrinter>]) --> lReady

 Argument

     <nPrinter>  Designates which LPT device to test.  A 1 corresponds to
     LPT1, 2 is LPT2, and a 3 is LPT3.  The default is LPT1(1).

 Returns

     PRINTREADY() returns a value of .T. when the printer is ready.  In any
     other case, PRINTREADY() returns .F..

 Description

     This function tests whether the printer is ready before you attempt to
     print.  This could help you avoid printer errors.

 Example

     In the following example, printing only occurs when the printer is
     ready:

     IF PRINTREADY(1)
        *...               // Print
     ELSE
        *...               // Error message
     ENDIF