Proto-Slavic accent is the accentual system of Proto-Slavic and is closely related to the accentual system of some Baltic languages (Lithuanian and Latvian) with which it shares many common innovations that occurred in the Proto-Balto-Slavic period. Deeper, it inherits from the Proto-Indo-European accent. In modern languages the prototypical accent is reflected in various ways, some preserving the Proto-Slavic situation to a greater degree than others.