All computer-generated art should be accompanied by its associated fonts in both screen and printer parts. If scans are used as part of the art, they must be included with the drawing file. Printers will need the scan even if the drawing program claims to have meshed it with the drawing. Do not use pattern fills. The smallest printable line width in computer line art is .25 pt.
Many computer programs offer 'hairline' as a line width option.
The hairline weight should never be used for art submitted in digital form. Anticipating the Effect of Reduction. The relationship between font size, rule weight, and final printed size should be considered when creating drawings, especially if many drawings and charts are to appear at a reduced size in the same book. Caps, italic, and boldface are ways to make visual distinctions within a drawing. Variations should be kept to a minimum so as not to distract from the legibility of the figure.