5.4. Linked group IDs

In TrenchBroom, it's possible to create 'linked duplicates' of groups of objects. Changes made to any duplicate are immediately applied to all linked duplicates, which makes this a powerful feature.

One downside is that all entity properties, including targetnames and targets, are the same across all duplicates. Properties can be overridden per instance, but it's still cumbersome to create reusable entity setups.

Fortunately, TrenchBroom adds a special _tb_group property to all entities that are part of a linked group. By 'lifting' this property, it can be used in MScript expressions in other properties. Simply append {_tb_group} to the targetname or target of an entity, and each linked duplicate will end up with a distinct targetname or target.

See the Creating interactive linked groups in TrenchBroom tutorial for more information.

Configuration

To disable this behavior, open mess.config and remove the _tb_group line in the lifted-properties section.