Representation Editor (Shortcut 'r')

The Representation Editor is used to edit the Matrix for a Transformed Representation.

To create a Representation of a Polygon Group, open the Object Browser (short-cut 'o') and right-click a Polygon Group and select 'New Representation'.

In order to see the matrix within the Representation Editor window you need to select a Representation from the Object Browser. In theory the matrix also exists for the Polygon Group's Direct Representation however it is fixed to the identity matrix which represents no transformation.

When a single Representation is selected, you can use the Transformation Window to manipulate the matrix much more easily than editing the numbers manually.

Transformed Representation
Direct Representation
Matrix