Damage includes marks caused by pen, pencil, highlighter, paper-clips, folding, tearing, cutting, food, liquids, by exposure to heat, dampness, dirt, pets and small children.
Ruined material are items that are damaged beyond repair and recovery and cannot be retained in the collection. This includes: damage that is obvious, pervasive or extensive to the whole item; damage which affects the condition of the item; damage which detracts from the appearance of the item.
Defaced material: A fine of $5 per item may be assessed for items that have slight or easily reparable damage, where the damage is noticeable but not distracting such as slight stains, marks or warping and limited to a few pages. A fine may also be assessed when the material is returned with multiple bookmarks or sticky notes.