U+17CC "៌" Khmer Sign Robat Unicode Character

U+17CC "៌" Khmer Sign Robat is a diacritical mark used in the Khmer script to indicate that a consonant is to be pronounced without its inherent vowel, effectively functioning as a subscript or stack sign when attached to a consonant that follows a consonant cluster, or in certain contexts to modify the sound of a base character. It is part of the Khmer block in Unicode and is primarily employed in older or formal orthography, including in transliterations of Pali and Sanskrit texts, where it helps represent complex syllable structures by suppressing the vowel sound of the consonant it accompanies, though its usage has become less common in modern standard Khmer writing.