1.1 --- a/css-ruby/Overview.src.html Tue Jun 18 23:45:38 2013 +0900
1.2 +++ b/css-ruby/Overview.src.html Wed Jun 19 00:17:07 2013 +0900
1.3 @@ -895,6 +895,44 @@
1.4 elements. This ratio is computed by taking into consideration the widest
1.5 element within each column.</p>
1.6
1.7 +<h2 id="rubyover">
1.8 +Ruby Overhang and Edge Effects</h2>
1.9 +
1.10 + <p>
1.11 + When <i>ruby annotation box</i> is longer than its corresponding <i>ruby base box</i>,
1.12 + the <i>ruby annotation box</i> may partially overhang adjacent boxes.
1.13 + </p>
1.14 + <p>
1.15 + This level of the specificaiton does not define
1.16 + how much the overhang may be allowed under what conditions.
1.17 + </p>
1.18 + <div class="example">
1.19 + <p>
1.20 + The user agent may use [[JIS4051]] recommendation of
1.21 + using one ruby text character length as the maximum overhang length.
1.22 + Detailed rules for how ruby text can overhang adjacent characters for Japanese are described by [[JLREQ]].
1.23 + </p>
1.24 + </div>
1.25 +
1.26 + <p>
1.27 + When such <i>ruby annotation box</i> is at the start or end edge of a line,
1.28 + user agent may align the side of the ruby text that touches the edge of the line
1.29 + to the corresponding edge of the base.
1.30 + This type of alignment is described by [[JLREQ]].
1.31 + </p>
1.32 + <p>
1.33 + This level of the specificaiton does not provide a mechanism to control this behavior.
1.34 + </p>
1.35 + <div class="figure">
1.36 + <p><img width="146" height="109"
1.37 + alt="Diagram of glyph layout in line-edge aligned ruby when ruby text is shorter than base"
1.38 + src="images/ra-le-l.gif" /><img width="146"
1.39 + height="110"
1.40 + alt="Diagram of glyph layout in line-edge aligned ruby when ruby text is longer than base"
1.41 + src="images/ra-le-r.gif" /></p>
1.42 + <p><b>Figure 4.2.8</b>: Line edge ruby alignment</p>
1.43 + </div>
1.44 +
1.45 <!--
1.46 <h3 id="rubyover">
1.47 Ruby overhanging: the 'ruby-overhang' property</h3>
