X-Git-Url: http://git.demorecorder.com/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=doc%2Fxml-xcb.txt;h=d47b12c9f7ac6dd4078d7da0bf7879cbfda55432;hb=afdfe208486cb90841518e91488b6a585c38aff7;hp=235958de3ed031b8f24eed3170ba6644b217da89;hpb=88f9def9341b8f9c8f45e8a95f6c40ac94fa959f;p=free-sw%2Fxcb%2Fproto
diff --git a/doc/xml-xcb.txt b/doc/xml-xcb.txt
index 235958d..d47b12c 100644
--- a/doc/xml-xcb.txt
+++ b/doc/xml-xcb.txt
@@ -322,6 +322,17 @@ Expressions
This element represents a sumation of the elements of the referenced list.
+expression
+
+ The expression is evaluated for each element of the referenced list,
+ in the context of this element.
+ This sumof element then represents a sumation of the results of these
+ evaluations.
+
+ expression will usually be a fieldref which references a field of
+ a list-element or an expression containing a fieldref,
+ such as popcount of a fieldref.
+
expression
This element represents the number of bits set in the expression.