The thinnest part of a letter other than the serif .
Joins are frequently hairlines.
Also, a fine line or rule, the thinnest that can be reproduced in printing. Half-bitting The manipulation of the edges of graphic images so as to minimise the effects of aliasing and reconstruction errors. Also called dentation . A method of simulating continuous-tone images with a device that has a small number of output tones, colours, or intensities. The patterns used are called dithers.