MarvinSketch offers a wide variety of features related to abbreviated groups. For more information about abbreviated groups, see Abbreviated (Superatom) Groups.
Several predefined abbreviated groups are available in MarvinSketch.
The complete set is listed in the Insert > Groups. These groups are also available as shortcuts.
The rotation of the molecule might change the writing order of the group, thus retaining the chemically correct connectivity.
You can easily create new groups that you often use. Select the structure and give it a name Superatom (abbreviation) in Structure > Groups > Create Group and if needed, define an attachment point. Add the newly created abbreviation group to the user.abbrevgroup file.
User-defined groups are, by default, session-only. To retain an abbreviated group for future use, add it to My Templates. This will also make the group available in the Groups menu or as a shortcut.