===================================================================
RCS file: /cvs/mandoc/eqn.7,v
retrieving revision 1.8
retrieving revision 1.13
diff -u -p -r1.8 -r1.13
--- mandoc/eqn.7	2011/07/21 12:34:09	1.8
+++ mandoc/eqn.7	2011/07/21 23:30:39	1.13
@@ -1,4 +1,4 @@
-.\"	$Id: eqn.7,v 1.8 2011/07/21 12:34:09 kristaps Exp $
+.\"	$Id: eqn.7,v 1.13 2011/07/21 23:30:39 kristaps Exp $
 .\"
 .\" Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 .\"
@@ -63,11 +63,37 @@ The equation grammar is as follows:
 .Bd -literal -offset indent
 eqn     : box | eqn box
 box     : text
-	| { eqn }
+        | { eqn }
         | DEFINE text text
         | SET text text
         | UNDEF text
+        | box pos box
+        | box mark
+        | pile { list }
+        | font box
+        | SIZE text box
+        | LEFT text box [RIGHT text]
 text    : TEXT
+pile    : LPILE
+        | CPILE
+        | RPILE
+pos     : OVER
+        | SUP
+        | SUB
+        | TO
+        | FROM
+mark	: DOT
+        | DOTDOT
+        | HAT
+        | TILDE
+        | VEC
+        | DYAD
+        | BAR
+        | UNDER
+font    : ROMAN
+        | ITALIC
+        | BOLD
+list    : eqn | list ABOVE eqn
 .Ed
 .Pp
 Data in TEXT form is a non-empty sequence of non-space characters or a