diff --git a/format-master.xml b/format-master.xml
index 37177aa..14a5471 100755
--- a/format-master.xml
+++ b/format-master.xml
@@ -1735,6 +1735,48 @@
 		<html><xsl:text disable-output-escaping="yes">&amp;#8776;</xsl:text></html>
 	</template>
 	
+	<template name="right-arrow" match="right-arrow|rightarrow|implies|rarr|rarrow">
+		<latex>
+			<xsl:text> \ensuremath{\</xsl:text>
+			<xsl:choose>
+				<xsl:when test="@weight='double'">R</xsl:when>
+				<xsl:otherwise>r</xsl:otherwise>
+			</xsl:choose>
+			<xsl:text>ightarrow} </xsl:text>
+		</latex>
+		<html>
+			<xsl:choose>
+				<xsl:when test="@weight='double'">
+					<xsl:text disable-output-escaping="yes">&amp;#8658;</xsl:text>
+				</xsl:when>
+				<xsl:otherwise>
+					<xsl:text disable-output-escaping="yes">&amp;#8594;</xsl:text>
+				</xsl:otherwise>
+			</xsl:choose>
+		</html>
+	</template>
+	
+	<template name="left-arrow" match="left-arrow|leftarrow|larr|larrow">
+		<latex>
+			<xsl:text> \ensuremath{\</xsl:text>
+			<xsl:choose>
+				<xsl:when test="@weight='double'">L</xsl:when>
+				<xsl:otherwise>l</xsl:otherwise>
+			</xsl:choose>
+			<xsl:text>eftarrow} </xsl:text>
+		</latex>
+		<html>
+			<xsl:choose>
+				<xsl:when test="@weight='double'">
+					<xsl:text disable-output-escaping="yes">&amp;#8656;</xsl:text>
+				</xsl:when>
+				<xsl:otherwise>
+					<xsl:text disable-output-escaping="yes">&amp;#8592;</xsl:text>
+				</xsl:otherwise>
+			</xsl:choose>
+		</html>
+	</template>
+	
 	<!--
 		The equivalent of LaTeX's "log-like functions".
 		
