ES: intervalo invertido, I: intervallo rivolto, F: intervalle reversé, D: umgekehrtes Intervall, NL: interval inversie, DK: omvendingsinterval, S: intervallets omvändning, FI: käänteisintervalli.
The difference between an interval and an octave.
This page is for LilyPond-2.6.3 (stable-branch).