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-rw-r--r--doc/refman/RefMan-pro.tex13
1 files changed, 8 insertions, 5 deletions
diff --git a/doc/refman/RefMan-pro.tex b/doc/refman/RefMan-pro.tex
index 5dbf315535..481afa8f87 100644
--- a/doc/refman/RefMan-pro.tex
+++ b/doc/refman/RefMan-pro.tex
@@ -165,14 +165,17 @@ in Section~\ref{ProofWith}.
{\tt Type* } is the forward transitive closure of the entire set of
section variables occurring in the statement.
-\variant {\tt Proof using -(} {\ident$_1$} {\ldots} {\ident$_n$} {\tt ).}
+\variant {\tt Proof using -( \ident$_1$} {\ldots} {\tt \ident$_n$ ).}
Use all section variables except {\ident$_1$} {\ldots} {\ident$_n$}.
-\variant {\tt Proof using } {\emph collection$_1$} {\tt + } {\emph collection$_2$} {\tt .}
-\variant {\tt Proof using } {\emph collection$_1$} {\tt - } {\emph collection$_2$} {\tt .}
-\variant {\tt Proof using } {\emph collection$_1$} {\tt - (} {\ident$_1$} {\ldots} {\ident$_n$} {\tt ).}
-\variant {\tt Proof using } {\emph collection$_1$}{\tt* .}
+\variant {\tt Proof using \nterm{collection}$_1$ + \nterm{collection}$_2$ .}
+
+\variant {\tt Proof using \nterm{collection}$_1$ - \nterm{collection}$_2$ .}
+
+\variant {\tt Proof using \nterm{collection} - ( \ident$_1$} {\ldots} {\tt \ident$_n$ ).}
+
+\variant {\tt Proof using \nterm{collection} * .}
Use section variables being, respectively, in the set union, set difference,
set complement, set forward transitive closure.