1@Section
2   @Title { Margin kerning }
3   @Tag { mkern }
4@Begin
5@PP
6The @Code "@Break" symbol offers a variant of ordinary paragraph
7breaking called @I { margin kerning }, in which small characters
8margin.kerning. @Index { margin kerning }
9that happen to end up at the start or end of a line protrude
10slightly into the margin.  This is said to make documents
11look better, particularly in narrow columns.  For example,
12@ID @Code @Verbatim {
132i @Wide marginkerning @Break {
14This is a test, just a little test, of
15margin kerning.   It should kern small
16characters at the margins.
17}
18}
19produces
20@ID 2i @Wide marginkerning @Break {
21This is a test, just a little test, of
22margin kerning.   It should kern small
23characters at the margins.
24}
25in which the comma at the end of the first line protrudes.  (For the
26@Code "@Wide" symbol, which produces a two-inch column here,
27see Section {@NumberOf precise}.)
28@PP
29As with most @Code "@Break" options, you probably want this in your
30@Code "@InitialBreak" option, described in Section {@NumberOf paras},
31if you use it at all.  By default there is no margin kerning.  To turn
32it off in a context where it is on, use @Code {"nomarginkerning @Break"}.
33@End @Section
34