Merge remote-tracking branch 'origin/master' into martin_docs1

Author: Martin Sjogren

Docs/UserGuide/tradedata/callableswap.tex

@@ -1,10 +1,12 @@
 \subsubsection{Callable Swap}\label{ss:callable_swap}
 
 The \lstinline!CallableSwapData! node is the trade data container for the \emph{CallableSwap} trade type. A Callable Swap is a
-two-legged swap that can be cancelled at predefined dates by one of the counterparties. A Callable Swap must have two legs,
-one fixed and one floating, each described by a \lstinline!LegData! trade component sub-node as described in section
-\ref{ss:leg_data}.  There must be at least one full coupon period after the exercise date for European 
-Callable Swaps, and after the last exercise date for Bermudan and American Callable Swaps. The \lstinline!CallableSwapData! node also contains an \lstinline!OptionData! node which describes
+ swap that can be cancelled at predefined dates by one of the counterparties. A Callable Swap must have at least one leg, each leg described by a \lstinline!LegData! trade component sub-node as described in section
+\ref{ss:leg_data}.  
+
+There must be at least one full coupon period after the exercise date for European Callable Swaps, and after the last exercise date for Bermudan and American Callable Swaps. 
+
+The \lstinline!CallableSwapData! node also contains an \lstinline!OptionData! node which describes
 the exercise dates and specifies which party holds the call right, see \ref{ss:option_data}. An example structure of a
 \lstinline!CallableSwapData! node is shown in Listing \ref{lst:callableswap_data}.
 
@@ -58,5 +60,7 @@ \subsubsection{Callable Swap}\label{ss:callable_swap}
   underlying Swap. A Callable Swap must have at least one leg on the underlying Swap, but can have multiple legs,
   i.e. multiple \lstinline!LegData! nodes.  The LegType elements must be of types \emph{Floating}, \emph{Fixed} or
   \emph{Cashflow}. All legs must have the same \lstinline!Currency!.
+  
+  Note that the direction of the legs, determined by the \lstinline!Payer! tag, is like for a Swap, from the perspective of the party to the trade. I.e. unlike for a Swaption where the direction of the legs is from the perspective of the party that is long. 
 
 \end{itemize}