C. Template Files Reference : Substitution Variables : System-defined Substitution Variables
 
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System-defined Substitution Variables
The code generator uses global substitution variables to represent information about the frame. You provide this information through the following Vision components:
The application flow diagram that specifies the frames that your application uses and how those frames are called
Visual query specifications. The visual query for each Append, Browse, and Update frame that provides basic information to generate the frame's form and database query
Menu items to call frames
Parameters passed between frames
4GL escape code; this code is incorporated into the source code file exactly as you have written it
Frame behavior specifications that control how users interact with the frame
Local variables that you have specified for the frame
There are two types of these substitution variables:
String variables
Boolean variables
The tables in the following sections list the substitution variables recognized by the code generator. You can use any of these variables when editing template files.