an·no·tate 
(ănō-tāt′)
(ănō-tāt′)v. an·no·tat·ed, an·no·tat·ing, an·no·tates
v.tr.
To furnish (a literary work) with critical commentary or explanatory notes; gloss.
v.intr.
To gloss a text.
[Latin annotāre, annotāt-, to note down : ad-, ad- + notāre, to write (from nota, note; see gnō- in the Appendix of Indo-European roots).]
anno·ta′tive adj.
anno·ta′tor n.