2 (1) Rhoddodd yr athro lyfr i'r bachgen ddoe gave-3sg the teacher book to-the boy yesterday "The teacher gave a book to the boy yesterday" (Bailyn, 2001) Although IGT is usually embedded in linguistics documents as part of a larger analysis, in and of itself it contains analysis and interesting information about the source language.
the gloss line, which is word and morpheme aligned with the source, contains word and morpheme translations for the source language data, and can even contain grammatically salient annotations (e.g., 3sg for Third Person Singular).