heitml provides the following built-in global variables which have a predefined name
and which can be accessed from everywhere:
- gl - an object in which global variables can be put. By default, the object has no fields.
- ff - an object containing fields of a submitted form. By default, the object has no fields.
- se and page - objects containing session data. By default, the objects have no fields.
- Srvxxx - variables containing server and client information about the current connection.