Subtype Window info box type
Info boxes of type Subtype Window are meant to be used for stepping out, from a subtype button, to a window where the user can specify values for subtype columns.
The following images show an arrangement generated in default classes on the basis of a relationship between supertype PERSON and subtype GUIDE in the data model.
Based on the relationship, a default subtype button has been generated at the Guide subtype checkbox (highlighted in red).
Default subtype button at foreign key field
When the user presses the button, a subtype window is opened. Even if the calling window is in tabbed mode, by default the subtype window is presented as a "floating" window. This has the advantage of leaving the calling window in view:
Default subtype window