VEL - Modelio-R-D/VariabilityDesigner GitHub Wiki
This module uses the VEL (Variability Exchange Language) to communicate with other tools.
You can find more detailed information on the dedicated website.
The VEL format has two modes : Description and Configuration.
A description outline all variability point of the model, with every possible variations. Each variation is link to model elements concerned by it. The file is used to transfer information about the model to variant management tools.
A configuration describe a specific variant for the system. The file itself is actually similar to the description with the addition of selected tags on some variations. This file is kind of a modified version of the description, generated by the variant management tool.