diff -r f2b0d849ea77 -r b85b13b1c2ec plcopen/pou_block_instances.xslt
--- a/plcopen/pou_block_instances.xslt	Fri Feb 16 01:38:34 2018 +0100
+++ b/plcopen/pou_block_instances.xslt	Fri Feb 16 01:48:48 2018 +0100
@@ -1,24 +1,15 @@
 <?xml version="1.0"?>
-<xsl:stylesheet xmlns:func="http://exslt.org/functions" xmlns:dyn="http://exslt.org/dynamic" xmlns:str="http://exslt.org/strings" xmlns:math="http://exslt.org/math" xmlns:exsl="http://exslt.org/common" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:yml="http://fdik.org/yml" xmlns:set="http://exslt.org/sets" xmlns:ppx="http://www.plcopen.org/xml/tc6_0201" xmlns:ns="pou_block_instances_ns" xmlns:regexp="http://exslt.org/regular-expressions" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" extension-element-prefixes="ns" version="1.0" exclude-result-prefixes="ns">
+<xsl:stylesheet xmlns:exsl="http://exslt.org/common" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:ppx="http://www.plcopen.org/xml/tc6_0201" xmlns:ns="pou_block_instances_ns" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" extension-element-prefixes="ns" version="1.0" exclude-result-prefixes="ns">
   <xsl:output method="xml"/>
-  <xsl:variable name="space" select="'                                                                                                                                                                                                        '"/>
-  <xsl:param name="autoindent" select="4"/>
-  <xsl:template match="text()">
-    <xsl:param name="_indent" select="0"/>
-  </xsl:template>
+  <xsl:template match="text()"/>
   <xsl:template match="ppx:pou[ppx:body]|ppx:transition[ppx:body]|ppx:action[ppx:body]">
-    <xsl:param name="_indent" select="0"/>
-    <xsl:apply-templates select="ppx:body/*[self::ppx:FBD or self::ppx:LD or self::ppx:SFC]/*">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
+    <xsl:apply-templates select="ppx:body/*[self::ppx:FBD or self::ppx:LD or self::ppx:SFC]/*"/>
   </xsl:template>
   <xsl:template name="add_instance">
-    <xsl:param name="_indent" select="0"/>
     <xsl:param name="type"/>
     <xsl:value-of select="ns:AddBlockInstance($type, @localId, ppx:position/@x, ppx:position/@y, @width, @height)"/>
   </xsl:template>
   <xsl:template name="execution_order">
-    <xsl:param name="_indent" select="0"/>
     <xsl:choose>
       <xsl:when test="@executionOrderId">
         <xsl:value-of select="@executionOrderId"/>
@@ -29,7 +20,6 @@
     </xsl:choose>
   </xsl:template>
   <xsl:template name="ConnectionInfos">
-    <xsl:param name="_indent" select="0"/>
     <xsl:param name="type"/>
     <xsl:param name="negated"/>
     <xsl:param name="edge"/>
@@ -37,18 +27,13 @@
     <xsl:value-of select="ns:AddInstanceConnection($type, $formalParameter, $negated, $edge, ppx:relPosition/@x, ppx:relPosition/@y)"/>
   </xsl:template>
   <xsl:template match="ppx:position">
-    <xsl:param name="_indent" select="0"/>
     <xsl:value-of select="ns:AddLinkPoint(@x, @y)"/>
   </xsl:template>
   <xsl:template match="ppx:connection">
-    <xsl:param name="_indent" select="0"/>
     <xsl:value-of select="ns:AddConnectionLink(@refLocalId, @formalParameter)"/>
-    <xsl:apply-templates select="ppx:position">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
+    <xsl:apply-templates select="ppx:position"/>
   </xsl:template>
   <xsl:template match="ppx:connectionPointIn">
-    <xsl:param name="_indent" select="0"/>
     <xsl:param name="negated"/>
     <xsl:param name="edge"/>
     <xsl:param name="formalParameter"/>
@@ -66,12 +51,9 @@
         <xsl:value-of select="$formalParameter"/>
       </xsl:with-param>
     </xsl:call-template>
-    <xsl:apply-templates select="ppx:connection">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
+    <xsl:apply-templates select="ppx:connection"/>
   </xsl:template>
   <xsl:template match="ppx:connectionPointOut">
-    <xsl:param name="_indent" select="0"/>
     <xsl:param name="negated"/>
     <xsl:param name="edge"/>
     <xsl:param name="formalParameter"/>
@@ -91,7 +73,6 @@
     </xsl:call-template>
   </xsl:template>
   <xsl:template match="ppx:connectionPointOutAction">
-    <xsl:param name="_indent" select="0"/>
     <xsl:call-template name="ConnectionInfos">
       <xsl:with-param name="type">
         <xsl:text>output</xsl:text>
@@ -99,7 +80,6 @@
     </xsl:call-template>
   </xsl:template>
   <xsl:template match="ppx:comment">
-    <xsl:param name="_indent" select="0"/>
     <xsl:value-of select="ns:SetSpecificValues(ppx:content/xhtml:p/text())"/>
     <xsl:call-template name="add_instance">
       <xsl:with-param name="type">
@@ -108,7 +88,6 @@
     </xsl:call-template>
   </xsl:template>
   <xsl:template match="ppx:block">
-    <xsl:param name="_indent" select="0"/>
     <xsl:variable name="execution_order">
       <xsl:call-template name="execution_order"/>
     </xsl:variable>
@@ -120,7 +99,6 @@
     </xsl:call-template>
     <xsl:for-each select="ppx:inputVariables/ppx:variable">
       <xsl:apply-templates select="ppx:connectionPointIn">
-        <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
         <xsl:with-param name="negated" select="@negated"/>
         <xsl:with-param name="edge" select="@edge"/>
         <xsl:with-param name="formalParameter" select="@formalParameter"/>
@@ -128,7 +106,6 @@
     </xsl:for-each>
     <xsl:for-each select="ppx:outputVariables/ppx:variable">
       <xsl:apply-templates select="ppx:connectionPointOut">
-        <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
         <xsl:with-param name="negated" select="@negated"/>
         <xsl:with-param name="edge" select="@edge"/>
         <xsl:with-param name="formalParameter" select="@formalParameter"/>
@@ -136,23 +113,18 @@
     </xsl:for-each>
   </xsl:template>
   <xsl:template match="*[self::ppx:type or self::ppx:baseType or self::ppx:returnType]/ppx:derived">
-    <xsl:param name="_indent" select="0"/>
     <xsl:value-of select="@name"/>
   </xsl:template>
   <xsl:template match="*[self::ppx:type or self::ppx:baseType or self::ppx:returnType]/ppx:string">
-    <xsl:param name="_indent" select="0"/>
     <xsl:text>STRING</xsl:text>
   </xsl:template>
   <xsl:template match="*[self::ppx:type or self::ppx:baseType or self::ppx:returnType]/ppx:wstring">
-    <xsl:param name="_indent" select="0"/>
     <xsl:text>WSTRING</xsl:text>
   </xsl:template>
   <xsl:template match="*[self::ppx:type or self::ppx:baseType or self::ppx:returnType]/*">
-    <xsl:param name="_indent" select="0"/>
     <xsl:value-of select="local-name()"/>
   </xsl:template>
   <xsl:template name="VariableBlockInfos">
-    <xsl:param name="_indent" select="0"/>
     <xsl:param name="type"/>
     <xsl:variable name="expression">
       <xsl:value-of select="ppx:expression/text()"/>
@@ -163,14 +135,10 @@
           <xsl:text>BOOL</xsl:text>
         </xsl:when>
         <xsl:when test="ancestor::ppx:pou[@name=$expression]">
-          <xsl:apply-templates select="ancestor::ppx:pou/child::ppx:interface/ppx:returnType">
-            <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-          </xsl:apply-templates>
-        </xsl:when>
-        <xsl:otherwise>
-          <xsl:apply-templates select="ancestor::ppx:pou/child::ppx:interface/*/ppx:variable[@name=$expression]/ppx:type">
-            <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-          </xsl:apply-templates>
+          <xsl:apply-templates select="ancestor::ppx:pou/child::ppx:interface/ppx:returnType"/>
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:apply-templates select="ancestor::ppx:pou/child::ppx:interface/*/ppx:variable[@name=$expression]/ppx:type"/>
         </xsl:otherwise>
       </xsl:choose>
     </xsl:variable>
@@ -184,51 +152,40 @@
       </xsl:with-param>
     </xsl:call-template>
     <xsl:apply-templates select="ppx:connectionPointIn">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
       <xsl:with-param name="negated" select="@negatedIn"/>
       <xsl:with-param name="edge" select="@edgeIn"/>
     </xsl:apply-templates>
     <xsl:apply-templates select="ppx:connectionPointOut">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
       <xsl:with-param name="negated" select="@negatedOut"/>
       <xsl:with-param name="edge" select="@edgeOut"/>
     </xsl:apply-templates>
   </xsl:template>
   <xsl:template match="ppx:inVariable">
-    <xsl:param name="_indent" select="0"/>
     <xsl:call-template name="VariableBlockInfos">
       <xsl:with-param name="type" select="'input'"/>
     </xsl:call-template>
   </xsl:template>
   <xsl:template match="ppx:outVariable">
-    <xsl:param name="_indent" select="0"/>
     <xsl:call-template name="VariableBlockInfos">
       <xsl:with-param name="type" select="'output'"/>
     </xsl:call-template>
   </xsl:template>
   <xsl:template match="ppx:inOutVariable">
-    <xsl:param name="_indent" select="0"/>
     <xsl:call-template name="VariableBlockInfos">
       <xsl:with-param name="type" select="'inout'"/>
     </xsl:call-template>
   </xsl:template>
   <xsl:template match="ppx:connector|ppx:continuation">
-    <xsl:param name="_indent" select="0"/>
     <xsl:value-of select="ns:SetSpecificValues(@name)"/>
     <xsl:call-template name="add_instance">
       <xsl:with-param name="type">
         <xsl:value-of select="local-name()"/>
       </xsl:with-param>
     </xsl:call-template>
-    <xsl:apply-templates select="ppx:connectionPointIn">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
-    <xsl:apply-templates select="ppx:connectionPointOut">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
+    <xsl:apply-templates select="ppx:connectionPointIn"/>
+    <xsl:apply-templates select="ppx:connectionPointOut"/>
   </xsl:template>
   <xsl:template match="ppx:leftPowerRail|ppx:rightPowerRail">
-    <xsl:param name="_indent" select="0"/>
     <xsl:variable name="type" select="local-name()"/>
     <xsl:variable name="connectors">
       <xsl:choose>
@@ -248,19 +205,14 @@
     </xsl:call-template>
     <xsl:choose>
       <xsl:when test="$type='leftPowerRail'">
-        <xsl:apply-templates select="ppx:connectionPointOut">
-          <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-        </xsl:apply-templates>
+        <xsl:apply-templates select="ppx:connectionPointOut"/>
       </xsl:when>
       <xsl:otherwise>
-        <xsl:apply-templates select="ppx:connectionPointIn">
-          <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-        </xsl:apply-templates>
+        <xsl:apply-templates select="ppx:connectionPointIn"/>
       </xsl:otherwise>
     </xsl:choose>
   </xsl:template>
   <xsl:template match="ppx:contact|ppx:coil">
-    <xsl:param name="_indent" select="0"/>
     <xsl:variable name="type" select="local-name()"/>
     <xsl:variable name="storage">
       <xsl:choose>
@@ -278,18 +230,12 @@
         <xsl:value-of select="$type"/>
       </xsl:with-param>
     </xsl:call-template>
-    <xsl:apply-templates select="ppx:connectionPointIn">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
-    <xsl:apply-templates select="ppx:connectionPointOut">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
+    <xsl:apply-templates select="ppx:connectionPointIn"/>
+    <xsl:apply-templates select="ppx:connectionPointOut"/>
   </xsl:template>
   <xsl:template match="ppx:step">
-    <xsl:param name="_indent" select="0"/>
     <xsl:value-of select="ns:SetSpecificValues(@name, @initialStep)"/>
     <xsl:apply-templates select="ppx:connectionPointOutAction">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
       <xsl:with-param name="negated" select="@negated"/>
     </xsl:apply-templates>
     <xsl:call-template name="add_instance">
@@ -297,15 +243,10 @@
         <xsl:value-of select="local-name()"/>
       </xsl:with-param>
     </xsl:call-template>
-    <xsl:apply-templates select="ppx:connectionPointIn">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
-    <xsl:apply-templates select="ppx:connectionPointOut">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
+    <xsl:apply-templates select="ppx:connectionPointIn"/>
+    <xsl:apply-templates select="ppx:connectionPointOut"/>
   </xsl:template>
   <xsl:template match="ppx:transition">
-    <xsl:param name="_indent" select="0"/>
     <xsl:variable name="priority">
       <xsl:choose>
         <xsl:when test="@priority">
@@ -341,7 +282,6 @@
     </xsl:variable>
     <xsl:value-of select="ns:SetSpecificValues($priority, $condition_type, $condition)"/>
     <xsl:apply-templates select="ppx:condition/ppx:connectionPointIn">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
       <xsl:with-param name="negated" select="ppx:condition/@negated"/>
     </xsl:apply-templates>
     <xsl:call-template name="add_instance">
@@ -349,15 +289,10 @@
         <xsl:value-of select="local-name()"/>
       </xsl:with-param>
     </xsl:call-template>
-    <xsl:apply-templates select="ppx:connectionPointIn">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
-    <xsl:apply-templates select="ppx:connectionPointOut">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
+    <xsl:apply-templates select="ppx:connectionPointIn"/>
+    <xsl:apply-templates select="ppx:connectionPointOut"/>
   </xsl:template>
   <xsl:template match="ppx:selectionDivergence|ppx:selectionConvergence|ppx:simultaneousDivergence|ppx:simultaneousConvergence">
-    <xsl:param name="_indent" select="0"/>
     <xsl:variable name="type">
       <xsl:value-of select="local-name()"/>
     </xsl:variable>
@@ -377,15 +312,10 @@
         <xsl:value-of select="$type"/>
       </xsl:with-param>
     </xsl:call-template>
-    <xsl:apply-templates select="ppx:connectionPointIn">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
-    <xsl:apply-templates select="ppx:connectionPointOut">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
+    <xsl:apply-templates select="ppx:connectionPointIn"/>
+    <xsl:apply-templates select="ppx:connectionPointOut"/>
   </xsl:template>
   <xsl:template match="ppx:jumpStep">
-    <xsl:param name="_indent" select="0"/>
     <xsl:variable name="type">
       <xsl:text>jump</xsl:text>
     </xsl:variable>
@@ -395,12 +325,9 @@
         <xsl:value-of select="$type"/>
       </xsl:with-param>
     </xsl:call-template>
-    <xsl:apply-templates select="ppx:connectionPointIn">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
+    <xsl:apply-templates select="ppx:connectionPointIn"/>
   </xsl:template>
   <xsl:template match="ppx:action">
-    <xsl:param name="_indent" select="0"/>
     <xsl:variable name="type">
       <xsl:choose>
         <xsl:when test="ppx:reference">
@@ -434,18 +361,14 @@
     <xsl:value-of select="ns:AddAction($qualifier, $type, $value, @duration, @indicator)"/>
   </xsl:template>
   <xsl:template match="ppx:actionBlock">
-    <xsl:param name="_indent" select="0"/>
     <xsl:value-of select="ns:SetSpecificValues()"/>
-    <xsl:apply-templates select="ppx:action">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
-    </xsl:apply-templates>
+    <xsl:apply-templates select="ppx:action"/>
     <xsl:call-template name="add_instance">
       <xsl:with-param name="type">
         <xsl:value-of select="local-name()"/>
       </xsl:with-param>
     </xsl:call-template>
     <xsl:apply-templates select="ppx:connectionPointIn">
-      <xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/>
       <xsl:with-param name="negated" select="@negated"/>
     </xsl:apply-templates>
   </xsl:template>