When Bob lights his cigar, his face is illuminated and his physical features are carefully described, in particular a white scar above his eyebrow. Why is the white scar important?

It makes Bob stand out. It reveals how Bob allows the policeman to see him and recognize him as a wanted criminal.

Explanation:

the sign -, used to join words to indicate that they have a combined meaning or that they are linked in the grammar of a sentence (as in pick-me-up, rock-forming ), to indicate the division of a word at the end of a line, or to indicate a missing or implied element (as in short- and long-term ).

Explanation: