diff --git a/core/assert.xml b/core/assert.xml
index 8822f965..b3d31468 100644
--- a/core/assert.xml
+++ b/core/assert.xml
@@ -42,6 +42,8 @@
yields~$\top$,
only one assertion will ever match,
even if others would match if execution were to continue.}
+ \tt{@class@} may optionally be used to predicate the asseriton itself---%
+ the assertion will be performed only on respective class matches.
\ref{_assert_} implements assertions by genearting two classifications---%
one to perform the actual assertion,
@@ -60,6 +62,9 @@
Assertion
+
+
@@ -74,7 +79,17 @@
-
+
+
+
+
+
+
+
+
+
+