1) Stressing 
The pen or pencil markings where the previous owner marked the book to highlight words, sentences, and/or passages of text.
Lining used to add body to a garment.
Underlining an extra layer of fabric cut as a duplicate of a section in a garment. When the garment is sewn, there two pieces are treated as one. Underlining is used with sheer fabrics adding an opaque backing. It can also serve as a backing for an unstable fabric.
A garment lining made from the pattern and placed under the fashion fabric to be sewn as one. It is is great to be used under see through fabrics or loose weave fabrics or to add firmness. Usually a light weight fabric is chosen as underlining