il

1. he (third-person singular masculine subject pronoun for human subject)
2. it (third-person singular subject pronoun for grammatically masculine objects)
3. Impersonal subject; it

s'agit

third-person singular present indicative of s’agir

de la

1. of the
2. some; the feminine partitive article

lettre

1. letter (written character)
2. letter (written message)
3. the literal meaning, the plain meaning of something

A

The first letter of the French alphabet, written in the Latin script.

brève

• Adj

  feminine singular of bref

• Noun

et

and

tilde

tilde