็

Letter
It is a Thai symbol that is called Mai Taikhu (ไม้ไต่คู้). It is used to shorten the written form of the vowel เ-ะ to เ-็. The word that has the form initial consonant + เ ะ + end consonant will be shortened to เ-็X. For example: เป็น is the shortened form of เปะน.