Diary Entries - no carbs but insulin & carbs but no insulin

What is the correct way of entering into the diary
1. no carbs eaten but an insulin correction
2. carbs eaten (ie for a hypo) but no insulin

1) 0+1 if you are correcting by 1 unit.
2) 0+1 if you are consuming 1 CP for a hypo. I usually have 1.5 or 2 CPs during a hypo, so it becomes 0+1.5 or 0+2.

Thank you Warwick