Combining Vertical-Line-Grave at U+1AD2 is a nonspacing diacritic from the Combining Diacritical Marks Extended block that places a vertical stroke together with a grave accent above the preceding base character. It is not used as a standalone mark; it modifies the letter or symbol before it as part of specialized transcriptional writing. This character is mainly intended for phonetic and linguistic notation systems that need finer distinctions than ordinary accent marks provide. In such material, a base letter may be followed by this combined diacritic to record a particular tone, stress, or prosodic contour defined by the transcription tradition being used. It can appear in language documentation, academic corpora, and digitized field notes where preserving exact diacritic combinations matters more than everyday readability. The practical gotcha is that display depends heavily on font and shaping support: if the mark is not positioned well, it may overlap the base letter or neighboring diacritics, making careful proofreading necessary.