Joining Group - Thin Noon

Thin Noon is a joining group used in Arabic script text processing to define how the letter noon, when written in a thin or reduced form, connects to adjacent characters. This value applies specifically to certain contextual variants of noon, typically found in traditional or calligraphic styles, where the character appears with a slender stroke. It dictates that the thin noon behaves like a standard noon in terms of directional joining, meaning it can connect to both the preceding and following letters when appropriate, but its visual form remains distinct for rendering engines. The value ensures consistent shaping and ligature decisions when such a variant appears in modern digital typography, preserving the intended cursive flow without merging the thin form into a regular noon shape.