marginalia

noun

1. (plural, plural-normally)Notes in the margin of a document.

   “We know what the composer was thinking as he wrote the piece because we can read his handwritten marginalia on the manuscript.”

   “In so doing, he transforms the Foxian compulsion to distinguish true martyrs from false ones —and thus to differentiate his own saint-making project from medieval hagiography—into a model of textual criticism, directed at detecting and desanctifying the false martyr through the critical medium of marginalia.”