You can specify whether you want to use Enter or Ctrl + Enter for creating a line break when entering text.
Procedure
Click ARIS > Options.
Click Model > General > Objects.
Specify your settings for Use Enter for line break in models (press 'Ctrl + Enter' for changes to take effect) and Use Enter for line break in tables and attribute editing (press 'Ctrl + Enter' for changes to take effect).
If you enable the check boxes, you can press Enter in the model, in tables, and in Attribute Editing to insert a line break and then press Ctrl + Enter to end editing.
If you disable the check boxes, line breaks are created by pressing Ctrl + Enter and you end editing by pressing Enter.
Depending on your selection, line breaks and end of editing are triggered by the corresponding keys.
The following applies to both:
The Esc key ends input and discards all changes.
A mouse click next to the text box ends editing and applies the changes.