This kana is derived from 『て』 (te) with a dakuten (voicing mark). It is used both inside vocabulary and as a grammatical particle. As a particle, it indicates the location where an action takes place or the means by which something is done. For example: 『がっこうで べんきょうする』 (gakkō de benkyō suru, 'to study at school'). Inside words, it functions as a voiced sound. Pronunciation is consistent in all contexts.