IMPORTANT: When adding a new class (or property, or any other item with an identifier), it is very important that the id is generated correctly! See How ID Generation Works for a discussion of how to make sure your new item will have the id you want. In particular, make sure to select the correct ID profile before adding terms.
New classes and properties can be added from the right-click menu or the edit menu. There is no way to create a new class or property using drag-and-drop. Newly created terms are given a default name, and may be given a default definition and definition dbxrefs if a "personal definition" has been specified in the Configuration Plugin .
Works by: Edit menu, right-click
Hot keys: None
Source requirements: No sources required
Target requirement: No target required
To add a new root, choose "Add root" from the edit menu or the right-click menu. A flyout menu will appear:
To add a new root class, choose "Add root". An id will be assigned automatically using the current id assignment rules.
To add a new property, choose "Add type root". A popup window will appear where you can type in the id for the new property.
Works by: Edit menu, right-click
Hot keys: None
Source requirements: Exactly one source relationship required
Target requirement: No target required
New terms can be created under and existing parent. To add a new term, select the parent term under which the new term will be added. Then, choose "Create new child" from the edit menu or the right-click menu.
If the selected parent is a class, the id of the new class will be assigned automatically using the current id assignment rules. If the selected parent is a property, the a popup window will appear where the id of the new property can be entered.
The new class or property will have an is_a relationship to its parent. See Changing Relationship Types for information on how to change this relationship after it is created.