Dario is amazing!
The Libre has an edit facility with each reading where you can enter the following:
-Food eaten (grams of carbohydrate and a reminder to re-test your BGL 1hr or 2hr after eating),
-Rapid Acting Insulin (dosage in units)
-Long acting insulin (dosage in units)
-Exercise
-Medication
There are also reminder options such as to test at certain times each day or to administer insulin (for example - once/twice daily long acting insulin).
The reports that you can export from the Libre are pretty detailed and amazingly layed out. It really makes things clear as to how things are going.
Hope this answers your query
Grant