Nits to support conversions.

Doc/lib/libpdb.tex

@@ -184,7 +184,7 @@ Move the current frame one level up in the stack trace
 (to a newer frame).
 
 \item[b(reak) \optional{\optional{\var{filename}:}\var{lineno}%
-              \code{\Large|}\var{function}%
+              \code{\Large{|}}\var{function}%
               \optional{, \var{condition}}}]
 
 With a \var{lineno} argument, set a break there in the current
@@ -204,7 +204,7 @@ the number of times that breakpoint has been hit, the current
 ignore count, and the associated condition if any.
 
 \item[tbreak \optional{\optional{\var{filename}:}\var{lineno}%
-              \code{\Large|}\var{function}%
+              \code{\Large{|}}\var{function}%
               \optional{, \var{condition}}}]
 
 Temporary breakpoint, which is removed automatically when it is