The Status Bar in the bottom left-hand corner of the Opus workspace shows the exact location of the cursor on the page.

You can use this to work out the size of your object as you create it on a page. Alternatively, you can resize an object after you have drawn it.

The Status Bar in the bottom right-hand corner of the Opus workspace shows the publication filename:

This allows easy identification of the active publication, which is especially useful when copying information between publications.