PROCEDURAL LANGUAGE HELP

This help describes variable usage (referencing) and the PL help commands.
Please use the following commands for help about other aspects of PL.

* ?                           This PL Help
* ? assign                    Help about variable assignments:  * ? assign
* ? control                   Help about control structures like '*if' and
                              loops:  *? control
* dump VARNAME path.txt       Dump variable value to text file
* list[values] [VARNAME1...]  List PL variable(s) (defaults to all)
* listsysprops [VARNAME1...]  List Java System property(s) (defaults to all)
* prepare VARNAME             Use ? in next SQL statement to upload val.
                              (Just "?", since "*{?}" is the auto var.).

Resolve PL variable values, which have been set, like: *{VARNAME}.
Resolve PL variable values, which MAY have been set, like: *{:VARNAME}.
SqlTool reserves variables with names beginning with * for special purposes.
 These are called SqlTool system variables.  Variables beginning with a
 letter and followed by zero or more letters, digits, or _, are 'user' vars.
Resolve System Property values (which you may not set) like: ${property.name}.
Resolve PL variables in logical expressions, like (*VARNAME == 1).  [No curlies]
When purposefully telling SqlTool a variable's "name", like to make an
 assignment, write just the name like:  VARNAME = 1.  [Bare names]
Use PL vars in math expressions, like ((NEWVAR = VARNAME * 3)).  [Bare names]
Auto. variable ? is set to the very latest SQL datum fetched (or update count).
    Query:  The value of the last field of the last row returned.
            (Except will be set to the *NULL_REP_TOKEN value instead of to
            real null if the value retrieved is a SQL null).
    other:  Return status of the command
            (for updates this will be the number of rows updated).
    null/unset:  If the last SQL command failed, ? will be unset (aka null).

