Joining Group - Dalath Rish

Dalath Rish is a joining group that defines how the Syriac letters Dalath and Rish connect to adjacent characters in cursive script rendering. It indicates that these letters take a specific dual-joining behavior, meaning they connect to both the preceding and following letters, but with a distinctive final form that differs from other dual-joining groups. This affects shaping in scripts where Dalath and Rish appear, ensuring their medial and final glyphs are correctly selected, especially in contexts like the Estrangela, Serta, and Madnhaya styles. The group is primarily relevant for right-to-left text processing, where the joining group determines ligature formation and the visual connection of these consonants with neighboring letters, particularly influencing how they combine with connecting marks or other modifiers.