browser_info and browser_url_vars were only described inside the troubleshooting
page, under Support Diagnostics. That is the right place to find them if you
already know they exist and are looking for a log line; it is not where anyone
looks when writing a hook, which is what they are mostly for.
The new Developer Guide page carries the whole subject: which services receive
the two tables, the column lists, the debug values per platform and the MPEINIT
log lines, reading them from a hook with the exist() guard, and the reminder that
they are client-supplied and so diagnostics rather than a security boundary.
Troubleshooting keeps three stub headings - browser_info, browser_url_vars,
reading-them-from-a-hook - pointing at the page, so the anchors that are already
published keep resolving, and the detail is not maintained twice.
Linked from the three places a hook author actually starts: the HOOK Scripts
section of the MPE_TABLES page, the pre-edit hook guide (where the editor's
inputs are listed), the two-rule-sets guide (post-edit hook), and the VA embed
page, where embed=va is exactly the kind of thing a hook wants to branch on.
The pre-edit hook example re-added _____DELETE__THIS__RECORD_____="No" when
it re-read the table, mirroring the data step getdata.sas used to run. That
column is created by the editor itself (it is the Delete? column) and is
never part of the dataset, so the example no longer adds it - and a response
that carries the name is refused by the editor, which the "What the hook
does" bullet now states.
Also notes the reserved name on the MPE_TABLES page, and says in the user
guide that the Delete? column is created by Data Controller rather than
being part of the table.
dc
allan