Here is a channel filter. Here you can choose which type of channels to be displayed in the Active Channels list. You can sort them by functional groups. Additional you have a function to purge unused channels.

Display All

lists all channels.

Display X-Form

lists all X-Form channels.

Display Specific

lists all specific channels. Material channels are specific channels since they are only available in groups, plugins and materials.

Display Texture

lists only all texture channels.

Display Deformation

lists only all deformation channels.

Display Morph

lists only all morph channels.

Display Constrained

lists only all channels that will be added to an object if you apply a constraint to it.

Display Socket

lists all plugin channels like Xpressionist Custom Channels or channels of particle plugins.

Relink Channels

If you choose this command from the list Xpressionist looks for all channels in your expression and will load them into the Active Channel List as l.ong as corresponding channels are present in your project. This is useful if you work with premade scripts that have been loaded into Xpressionist or if you want to purge channels from the list that are not longer in use by your expression.