Abstract ART mark object that provides general functions for all mark types.
| IG_ARTX_mark_bounds_get | Queries annotation bounding rectangle. |
| IG_ARTX_mark_clone | Creates a copy of mark. |
| IG_ARTX_mark_clone_from_legacy | Creates a non-legacy object that corresponds to the source mark. |
| IG_ARTX_mark_create | Creates specified mark object with default attributes. |
| IG_ARTX_mark_delete | Deletes the mark object. |
| IG_ARTX_mark_hittest_bounds_get | Returns a minimal bounding rectangle containing all the graphic elements of annotation. |
| IG_ARTX_mark_move | Moves mark to the specified offset. |
| IG_ARTX_mark_tooltip_get | Queries annotation tooltip string. |
| IG_ARTX_mark_tooltip_set | Updates annotation tooltip string. |
| IG_ARTX_mark_type_get | Queries type of annotation. |
| IG_ARTX_mark_user_data_get | Queries user data associated with mark. |
| IG_ARTX_mark_user_data_set | Sets the user data associated with mark. |
| IG_ARTX_mark_visible_get | Queries visibility state of mark. |
| IG_ARTX_mark_visible_set | Sets the mark visibility state. |