[fpc-pascal] OOP and XML usage

[Jorge Aldo G. de F. Junior]

"Example XML, and there isn't a limit to the nesting of options."

no theres no limit for nested tags, they are stored in a tree plus a
linear list indexed by instance names

(nodes without instance names will receive a random instance name -
and be basically out of reach by the linear list - but will be still
reachable by walking the tree)

sorry for so much emails, im in a hurry.