"Choti yeh'' (छोटी ये) is one of those rare letters which serves both as a consonant and also as a vowel. Here is how it is written in different positions.
Choti yeh works as a consonant (in the initial or medial position) with words such as "yaar" (friend) یار or "dayaar" (place) دیار . It is also used as an initial or medial vowel: as in "ek" (one) ایک or in "kaisa" (how) کیسا
Placed below is my attempt at writing the letter Choti yeh, and a harf which contains today's lafz: "bayaan" which means "statement" or "narration".
Today's sher? By Aga Hashr:
Tum aur fareb khaao bayaan-e-raquib se
tum se to kam gilaa hai ziyaada naseeb se.
Here's a marvellous rendition of the ghazal by the incomparable Farida Khanum: