>>I've found few good examples of VFP code using escape sequences.
>>
>>I'd like to use the absolute positioning escape sequence.
>>ESC $ n1 n2.
>>But I'm not sure how to send both parameters.
>
>Where did you find this code? I don't see it in my PCL5 manual.

These are mainly ESC/P2 codes.

Try this link.
http://files.support.epson.com/pdf/general/escp2ref.pdf