Rag
The uneven edge of unjustified text, and something a typesetter shapes rather than accepts.
Near it
Justification
Measure
Widow
Hanging punctuation
Hyphenation
OrphanWhat it is made of
| a good rag | varies line to line without pattern | |
| a bad rag | makes a shape: a wedge, a stair, or two lines nearly equal followed by a very short one |