Combining Latin Small Letter Insular G at U+1ACC is a nonspacing mark that places a small insular g above or after a base character as part of specialized transcription. It belongs to the Combining Diacritical Marks Extended block, so it modifies neighboring text rather than functioning as an independent letter. Its main use is in scholarly editions and linguistic notation for medieval Insular writing traditions, especially Old English, Old Irish, and related manuscript studies. Editors may use it to record an insular g-shaped abbreviation, superscript letter, or scribal sign while keeping the underlying base letter in plain text. The practical point is that it combines with the preceding character and can be hard to select, count, or search as a separate item. It should not be treated as an ordinary small g: it represents a paleographic annotation tied to manuscript transcription, and its appearance depends on fonts that support these extended combining marks.