Hi Actually I am not using a specifc tool to generate feature models. For the moment, I am using XML Files to express features because tools like SPLOT use such format so it would be easy to export it into Moose. It would be nice to have the Frascati feature model file, just to test some new metrics and visualisations and better understand the code :) Abdelghani  De : Alexandre Bergel <alexandre.bergel@me.com> à: abdelghani ALIDRA <alidrandco@yahoo.fr> Envoyé le : Mercredi 24 juin 2015 17h03 Objet : Re: [Pharo-users] Moose Hi! No, we do not have a particular description of the text file. This was made in a very ad-hoc way, and very close to Familiar. Since I guess you are using your own platform to express features and variability, I guess this text description is not that useful for you. Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel  http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. On Jun 24, 2015, at 8:13 AM, abdelghani ALIDRA <alidrandco@yahoo.fr> wrote: Thanks for the document. Since Familiar code is open, I may want to reuse some parts of it. I noticed there is a FMTexImportCommand class in the Familiar package. This is to load a feature model from a text description or file I gess. What is the structure of such a file? Maybe you have some examples also? Regards.Abdelghani De : Alexandre Bergel <alexandre.bergel@me.com> à: abdelghani ALIDRA <alidrandco@yahoo.fr> Envoyé le : Mardi 23 juin 2015 15h39 Objet : Re: [Pharo-users] Moose What I try to do is to use Moose to model, raison and do visualizations on feature models (a variability model used to model variability in software product lines) In the feature model there is a concept called crosstree constraints relying two features (fonctionnalities) example: aFeature requires aNotherFeature. The relation goes from aFeature to aNotherFeature. Okay. Interesting topic.We did a bit of work on this, you may want to have a look at it:https://dl.dropboxusercontent.com/u/31543901/MyPapers/Urli15-FeatureComplexi... Cheers, Alexandre Regards De : Alexandre Bergel <alexandre.bergel@me.com> à: abdelghani ALIDRA <alidrandco@yahoo.fr>; Any question about pharo is welcome <pharo-users@lists.pharo.org> Envoyé le : Lundi 22 juin 2015 19h41 Objet : Re: [Pharo-users] Moose Hi! I have never used the previous and next. No idea whether this is used or not.What are you trying to achieve? Cheers,Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel  http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. On Jun 22, 2015, at 12:06 PM, abdelghani ALIDRA <alidrandco@yahoo.fr> wrote: Hi everybody, when working with the FAMIX meta model, one must implement the previous, next, from and to methods for each class extending FAMIXAssosiation. What is the diffence between previous/from and next/to?if I make MyFamixClass>>from^previousthe same information is displayed twice in the Moose panel (because both methods are annotated with the MSEProperty in the superclass)Who can one avoid that? Regards Abdelghani