These functions assist in managing the members of an outline.
| Function | Description |
| EssOtlAddMember() | Adds a member |
| EssOtlDeleteMember() | Deletes a member |
| EssOtlAddDimension() | Adds a dimension |
| EssOtlDeleteDimension() | Deletes a dimension |
| EssOtlRenameMember() | Renames a member |
| EssOtlMoveMember() | Moves a member |
| EssOtlFindMember() | Finds a member |
| EssOtlGetMemberCommentEx() | Gets the extended comment for a specified member |
| EssOtlGetMemberInfo() | Gets member information |
| EssOtlSetMemberCommentEx() | Sets the extended comment for a specified member |
| EssOtlSetMemberInfo() | Sets member information |