Imbedded aids are units of assistance and enrichment woven into textual material to aid in reading comprehension. Eighteen specific types of aids have been developed so far, ranging from line numbering locators to independent study suggestions. This paper presents an imbedded-aids prototype, a partial rationale for the approach, and a critique of two preliminary studies of the value of aids in improving reading comprehension and of their acceptability among teachers and students. Examples of imbedded aids are included. (AA)