IDM_ATOMICSELECTION

When this command is issued in design mode, any element that has an ATOMICSELECTION attribute set to TRUE will be selectable only as a unit.

TBD

Usually, elements with an ATOMICSELECTION attribute are selected as a unit in browse mode only. In design mode, the MSHTML Editor's default behavior allows you to locate the insertion point in the text of any element, including elements with an ATOMICSELECTION attribute. This command allows you to override the default Editor behavior.

Using the MSHTML Editor's Extra Features