🚀 go-pugleaf

I have noticed that there is undocumented usage of the SQL command 
SELECT, at least in my installation of Visual Dbase 5.5.

For example:

I do not see any mention under HELP|SELECT.  That talks about the 
meaning or usage of LEFT OUTER JOIN, RIGHT OUTER JOIN, INNER JOIN...
The list might go on? If I knew SQL I wouldn't mind as much I would just 
try the commands and see if they work.  I'm very interested in finding 
complete documentation on Local SQL.  I'm having some trouble getting 
the results I want using SELECT.  I called a friend who knows a little, 
he proceeded to find some answers for using MS Access.

Is there any .HOW files out there or something that will help me use SQL 
statements??

Thanks, Greg