QPR-12156 update user guide and schema

Author: pcaspers

Docs/UserGuide/userguide.tex

@@ -6135,10 +6135,15 @@ \subsection{Stress Scenario Analysis: {\tt stressconfig.xml}}\label{sec:stress}
 In case of the swaption volatility shifts, the single value given as {\tt Shift} (without the attributes {\tt expiry}
 and {\tt term}) represents a default value that is used whenever no explicit value is given for a expiry / term pair.
 
+UseSpreadedTermStructures: If set to true, spreaded termstructures over t0 will be used for the scenario calculation, to
+improve the alignment of the scenario sim market and t0 curves.
+
+
 \begin{longlisting}
 %\hrule\medskip
   \begin{minted}[fontsize=\scriptsize]{xml}
 <StressTesting>
+  <UseSpreadedTermStructures>false</UseSpreadedTermStructures>
   <StressTest id="parallel_rates">
     <DiscountCurves>
       <DiscountCurve ccy="EUR">

xsd/stress.xsd

@@ -4,6 +4,7 @@
 
   <xs:complexType name="stresstesting">
     <xs:sequence>
+      <xs:element type="bool" name="UseSpreadedTermStructures" minOccurs="0"/>
       <xs:element type="stresstest" name="StressTest" maxOccurs="unbounded"/>
     </xs:sequence>
   </xs:complexType>