Below you can find tips and tricks for modeling with metamodels. 

Resize a profile or data type object to fit the included attributes, literals and members

When adding attributes to a profile, or literals and members to a data type, it may happen that the entered identifier and type of the item exceed the size of the parent element. An example:

You can easily make the parent element fit the item by selecting the item, pressing F2, and then pressing Enter. The parent element resizes to fit the item.