diff --git a/xml2xslt.xsl b/xml2xslt.xsl
index be4131d..fd7668b 100644
--- a/xml2xslt.xsl
+++ b/xml2xslt.xsl
@@ -47,8 +47,15 @@
 		
 		<xsl-out:param name="showanswers"><xsl:text>no</xsl:text></xsl-out:param>
 		
+		<!-- This is normally the path to the current document directory. -->
 		<xsl-out:param name="base-path"><xsl:text>.</xsl:text></xsl-out:param>
 		
+		<!-- This is normally the path to the root directory of the paper tree in the filesystem. -->
+		<xsl-out:param name="paper-include-path"><xsl:text>.</xsl:text></xsl-out:param>
+		
+		<!-- This is normally the file paper_init.tex in the root of the paper tree. -->
+		<xsl-out:param name="latex-initialisation-file"><xsl:text>paper_init</xsl:text></xsl-out:param>
+		
 		<!-- Full period string corresponding to the supplied period code. -->
 		<xsl-out:variable name="period-string" select="infosci:expand-period-code( $period-code )" />
 		
@@ -367,6 +374,11 @@
 \PassOptionsToClass{\LaTeXOptions}{\DocumentClass}
 \documentclass{\DocumentClass}
 
+% Set up paper variables, if applicable.
+\makeatletter
+\@ifpackageloaded{lecturecommon}{\input{</xsl-out:text><xsl-out:value-of select="$paper-include-path" /><xsl-out:text>/</xsl-out:text><xsl-out:value-of select="$latex-initialisation-file" /><xsl-out:text>}}
+\makeatother
+
 % Avoid option clash if document class already loaded it.
 \makeatletter
 \@ifpackageloaded{geometry}{}{\usepackage[margin=1in]{geometry}}