You can draw connections between objects with the keyboard if you have defined abbreviations for these connections.
Procedure
If there are several possible connections with the same abbreviation, the Create connections dialog opens. Enable the relevant connections and click OK.
The connections that correspond to the abbreviation are created in your matrix model. In a matrix model, connections are created at definition level only.
Tip
If abbreviations are specified for the connections, you can move in the matrix model using the arrow keys and create connections using only the keyboard.