Syntax of
APEX URL is not easy interpretable, there are many hard to read colon separated values.
Peter has great article about this, additionally to Oracle Documentation.
But
in APEX there are many places without cool wizard to easy build this complexes URL.
To help other developers I build simple APEX URL Builder / Parser, which parse
URL to component parts for separate analyze and modifications. You can of course build your own URL using
predefined substitution variables like &APP_ID., &&SESSION_ID. Etc.
APEX URL Builder / Parser