changed value to 'gap'

Author: howcom

css3-gcpm/Overview.src.html

@@ -3278,7 +3278,7 @@ <h3>Aligning baselines</h3>
 adjacent columns. This gives the presentation a visual rythm, and text
 in the end of the columns will be alignend. To support this, a new
 value on the <span class=property>'line-box-contain'</span> is
-defined: ''crack'' (or, perhaps, ''snap-space'', ''void'', ''grid'', ''dmz'').
+defined: ''gap'' (or, perhaps, ''crack'', ''snap'', ''snap-gap'', ''void'', ''grid'', ''snap-to-grid'').
 
 <p>The value means that the height of the line in which the element
 occurs should be rounded upt to the smallest multiple of the used
@@ -3289,7 +3289,7 @@ <h3>Aligning baselines</h3>
 
 <pre>
 div.multicol { line-height: 15px }
-div.figure { height: 20px; line-box-contain: block inline replaced crack }
+div.figure { height: 20px; line-box-contain: block inline replaced gap }
 </pre>
 </div>