Joining Group - Semkath

Semkath is a joining group that defines how a specific Arabic script character, namely the letter representing the Semkath sound (similar to the Hebrew samekh), connects to adjacent letters in cursive writing systems. It indicates that this character belongs to the same behavioral class as other letters with a distinctive medial and final form, meaning it connects on both sides when in the middle of a word but only to the preceding letter when at the end. Its behavior is analogous to that of foundational letters like Beh or Noon, ensuring proper shaping and ligature formation in scripts that use connected writing. This group helps render text correctly by specifying the joining patterns for a character that otherwise resembles a closed loop, distinguishing it from characters that only connect on one side. As a result, Semkath contributes to consistent and readable typography in languages that employ the Arabic script.