LPOS Function Details
 
Syntax
  LPOS(n)
 
The argument n is the index of the printer being tested:
 
  - LPT1: would be tested with LPOS(1) or LPOS(0)
  - LPT2: would be tested with LPOS(2)
  - LPT3: would be tested with LPOS(3)
 
The LPOS function does not necessarily give the physical position of the
print head because it does not expand tab characters. In addition, some
printers may buffer characters.