FAQ page explaining what happens with a deload, light session, etc

Header is pretty self explanatory, but it would be nice to know exactly what happens with a deload, light session (weights go down? Reps? Sets? Multiple things?), How the app calculates your progression (does it go off of last week's workout only or does it use an average?), Things like that. I just know if I have a bad workout one week, that doesn't necessarily mean I lost strength, so I wouldn't want the app to base my next workout solely on the last workout.