'Offset' active mode on display of Mini Panel

It's probably just me but I find that sometimes when I activate the OFFSET mode on the mini panel using the Offset button I will sometimes get involved in another process and forget I have switched from the Primary wheels. Of course then I start using the 3 wheels thinking I'm in Primary and have to UNDO a lot of stuff when I see an unexpected result.
It would be helpful if the LCD display showed/reminded me I had OFFSET mode selected at a glance.
Thanks.