TrvActionCustomParaListSwitcher is a base class for the actions toggling paragraphs' bullets or numbering on/off.
TrvActionCustomParaListSwitcher = class(TrvAction)
This action is checked when the current paragraph has a list marker with properties identical to the properties of ListLevels. In this case, applying the action removes bullets and numbering in all selected paragraphs. Otherwise, applying this action applies a list style with levels specified in ListLevels to all selected paragraphs. The 0th list level is applied to paragraphs that did not have list markers; for other paragraphs, level indices are not changed.
This action is not used directly. The following actions are inherited from it: