[css-align] self-start/end would mean that baseline-sharing els could align in diff directions, which wouldn't make sense.

Author: tabatkins

css-align/Overview.bs

@@ -279,7 +279,7 @@ Baseline Alignment: the ''baseline'' and ''last-baseline'' keywords</h3>
 			of all the boxes in its <a>baseline-sharing group</a>.
 
 			If the <a>alignment subject</a>’s position is not fully determined by <a>baseline alignment</a>,
-			the content is ''self-start''-aligned insofar as possible while preserving the baseline alignment.
+			the content is ''start''-aligned insofar as possible while preserving the baseline alignment.
 			(Content that has no <a>first baselines</a> is thus start-aligned.)
 
 		<dt><dfn>last-baseline</dfn>
@@ -291,7 +291,7 @@ Baseline Alignment: the ''baseline'' and ''last-baseline'' keywords</h3>
 			of all the boxes in its <a>baseline-sharing group</a>.
 
 			If the <a>alignment subject</a>’s position is not fully determined by <a>baseline alignment</a>,
-			the content is ''self-end''-aligned insofar as possible while preserving the baseline alignment.
+			the content is ''end''-aligned insofar as possible while preserving the baseline alignment.
 			(Content that has no <a>last baselines</a> is thus end-aligned.)
 	</dl>