Adobe InDesign CC 2015 User Manual download pdf (Page 359)

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Typography

Last updated 6/6/2015

A Original B Kerning applied between “W” and “a” C Tracking applied

How kerning and tracking are measured

You can apply kerning, tracking, or both to selected text. Tracking and kerning are both measured in 1/1000 em, a unit

of measure that is relative to the current type size. In a 6-point font, 1 em equals 6 points; in a 10-point font, 1 em equals

10 points. Kerning and tracking are strictly proportional to the current type size.

Tracking and manual kerning are cumulative, so you can first adjust individual pairs of letters, and then tighten or

loosen a block of text without affecting the relative kerning of the letter pairs.

When you click to place the insertion point between two letters, InDesign displays kerning values in the Character

panel and the Control panel. Metrics and optical kerning values (or defined kern pairs) appear in parentheses. Similarly,

if you select a word or a range of text, InDesign displays the tracking values in the Character panel and Control panel.

Apply kerning to text

You apply either of two types of automatic kerning: metrics kerning or optical kerning, or you can adjust the spacing

between letters manually.

Use metrics kerning

1 Set the text insertion point between the characters you want to pair kern, or select text.

2 In the Character panel or Control panel, select Metrics in the Kerning menu.

3 In the Character panel or Control panel, select Metrics or Metrics - Roman Only in the Kerning menu.

Note: If Metrics is applied to fonts (including some Japanese OpenType fonts) which do not contain pair kerning

information, spacing for each character will be set to “0” and character compression will not occur.

To avoid using the built-in kerning information of a font for selected text, choose “0” in the Kerning menu.

Note: The default setting is Metrics – Roman Only. When Metrics - Roman Only is applied to Roman OpenType fonts,

kerning is the same as when Metrics is selected. When Metrics - Roman Only is applied to CJK OpenType fonts, only the

Roman characters will be kerned with kerning pairs as if Metrics were set. The CJK characters will not be kerned, as if '0'

were set. For this reason, choose '0' to turn off pair kerning.

Note: If you use font metrics kerning in a Japanese OpenType font, it is recommended that you choose OpenType > Use

Proportional Metrics from the Control panel menu. That way, you can avoid making unnecessary manual kerning

adjustments.

Use optical kerning

1 Set the text insertion point between characters you want to pair kern or select the text you want to kern.

2 In the Character panel or Control panel, select Optical in the Kerning menu.

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Adobe InDesign CC 2015 User Manual Page 359

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