From OpenSCADAWiki
The property "Configuration" is the sign indicating the using of input/output of the template function in the resulting configuration of the template on the logic level. The following options for this property are provided:
- Variable — available for access and control only from the template procedure as a variable saved with the logical level parameter context;
- Constant — available for setting at the parameter of logic level as a constant in the configuration section of the template;
- Link — available for setting at the parameter of the logical level as a link in the configuration section of the template.