Joining Group - Vertical Tail

Vertical Tail is a joining behavior classification for certain Arabic and Syriac script characters, indicating that the glyph connects to neighboring letters via a vertical stroke at its tail end, rather than a horizontal or angled connection. This value applies primarily to letters like the final forms of beh, teh, and peh in specific styles, where the right-side tail curves or drops vertically to join the preceding character. In shaping contexts, Vertical Tail influences how ligatures and cursive connections are formed, ensuring that the visual flow of connected text remains consistent. It reflects a historical or calligraphic variant where the joining point is oriented downward, distinguishing these letters from those with flat or round tails in the same positional forms.