Final answer:
The question is likely related to the process of removing stickers and decals from the covers of used books, which falls under English instruction comprehension.
Step-by-step explanation:
The question posed seems to be incomplete, making it challenging to provide a definitive answer. However, if we are to understand the context as being related to the removal of stickers and decals from the covers of used books, it falls under the subject of English, specifically in a section dealing with following instructions or understanding descriptive text.
In this context, the statement could be instructing someone on how to prepare used books for reuse or sale, suggesting that any stickers and decals should be removed from the book covers. This might involve a step-by-step process where one would carefully peel off the stickers and decals or use a solvent to dissolve adhesive residues without damaging the cover.