AVS is a source configuration management software that embedds a bug tracking feature. It is based on a common file "check-out / check-in" procedure, which eases early conflict detection. A file can have parallel versions. A proprietary 3-way merge tool is bundled to help merging. AVS uses a development task concept, which allows grouping checked-out files for the same purpose. Users can then work on several tasks at once without confusing files. Each development task is natively linked to a change request, which can be linked to several tasks. The build manager then relies on a change request selection within a set, while still being able to unselect some tasks if needed. A user management feature, with groups and access rights, is provided to restrict access to users upon their profile.