I can find answers to many question on TeX problems here. Mostly they are like giving fish rather than teaching how to fish. One cannot tailor made them due to short of guide on where they come from. Frequently, later researchers cannot fulfil their curiosity in acquiring knowledge besides solving immediate practical issues.
I have received a nice answer to my question, but now I am puzzled what is
\pstVerb) and where it is documented; postponed accepting it as "answer" until I fully understand the details. All the documents and search engines point to
"Driver notes: The command
\pstVerbmust be defined."
"The node macros use
I searched documents at tug.org/PSTricks, in addition to numerous sites and documents on the search engines; as far as I could. I looked into documents inside my installed packages, too, as much it was possible. Appreciate a link.