Thanks for the replies.
As a note, I was not thinking of warnings during flight, but during planning, for example as with terrain level warnings on the warning tab, where a pop is shown to correct the minimum safe altitude.
Your leg from XXX to YYY is planned at 2,100ft, which is below its minimum safe altitude of 3,500ft.
Would you like to raise the cruise level for this leg to 3,500 ft ?
Thank you again.