If all you want is a list of objects and their attributes, that document you linked gets you close. I'd use an sql tool and run the following to get this information:
select objectname, attributename from maxattribute
order by objectname, attributename;
If you need other information, for example attribute type and length, add those to the query. Something like:
select objectname, attributename, length, maxtype from maxattribute
order by objectname, attributename;
Hope this helps.