diff --git a/modules/greek-characters.xml b/modules/greek-characters.xml
index cbc812a..a842d2b 100755
--- a/modules/greek-characters.xml
+++ b/modules/greek-characters.xml
@@ -10,7 +10,7 @@
 
 <stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 
-	<!-- Lower case alpha. -->
+	<!-- Lower case alpha (α). -->
 	
 	<template name="alpha" match="alpha|greek-small-letter-alpha">
 		<common formats="/latex/xelatex/">\ensuremath{\alpha}</common>
@@ -25,7 +25,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case alpha. -->
+	<!-- Upper case alpha (Α). -->
 	
 	<template name="capital-alpha" match="alpha|greek-capital-letter-alpha">
 		<common formats="/latex/xelatex/">\ensuremath{A}</common>
@@ -41,7 +41,7 @@
 	</template>
 	
 	
-	<!-- Lower case beta. -->
+	<!-- Lower case beta (β). -->
 	
 	<template name="beta" match="beta|greek-small-letter-beta">
 		<common formats="/latex/xelatex/">\ensuremath{\beta}</common>
@@ -56,7 +56,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case beta. -->
+	<!-- Upper case beta (Β). -->
 	
 	<template name="capital-beta" match="beta|greek-capital-letter-beta">
 		<common formats="/latex/xelatex/">\ensuremath{B}</common>
@@ -72,7 +72,7 @@
 	</template>
 	
 	
-	<!-- Lower case gamma. -->
+	<!-- Lower case gamma (γ). -->
 	
 	<template name="gamma" match="gamma|greek-small-letter-gamma">
 		<common formats="/latex/xelatex/">\ensuremath{\gamma}</common>
@@ -87,7 +87,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case gamma. -->
+	<!-- Upper case gamma (Γ). -->
 	
 	<template name="capital-gamma" match="gamma|greek-capital-letter-gamma">
 		<common formats="/latex/xelatex/">\ensuremath{\Gamma}</common>
@@ -103,7 +103,7 @@
 	</template>
 	
 	
-	<!-- Lower case delta. -->
+	<!-- Lower case delta (δ). -->
 	
 	<template name="delta" match="delta|greek-small-letter-delta">
 		<common formats="/latex/xelatex/">\ensuremath{\delta}</common>
@@ -118,7 +118,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case delta. -->
+	<!-- Upper case delta (Δ). -->
 	
 	<template name="capital-delta" match="delta|greek-capital-letter-delta">
 		<common formats="/latex/xelatex/">\ensuremath{\Delta}</common>
@@ -134,9 +134,10 @@
 	</template>
 	
 	
-	<!-- Lower case epsilon. -->
+	<!-- Lower case epsilon (ε). -->
 	
 	<template name="epsilon" match="epsilon|greek-small-letter-epsilon">
+		<!-- Use \varepsilon for consistency with Unicode. -->
 		<common formats="/latex/xelatex/">\ensuremath{\varepsilon}</common>
 		<html><xsl:text disable-output-escaping="yes">&amp;epsilon;</xsl:text></html>
 		<!-- U+03B5 GREEK SMALL LETTER EPSILON -->
@@ -149,7 +150,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case epsilon. -->
+	<!-- Upper case epsilon (Ε). -->
 	
 	<template name="capital-epsilon" match="epsilon|greek-capital-letter-epsilon">
 		<common formats="/latex/xelatex/">\ensuremath{E}</common>
@@ -165,7 +166,7 @@
 	</template>
 	
 	
-	<!-- Lower case zeta. -->
+	<!-- Lower case zeta (ζ). -->
 	
 	<template name="zeta" match="zeta|greek-small-letter-zeta">
 		<common formats="/latex/xelatex/">\ensuremath{\zeta}</common>
@@ -180,7 +181,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case zeta. -->
+	<!-- Upper case zeta (Ζ). -->
 	
 	<template name="capital-zeta" match="zeta|greek-capital-letter-zeta">
 		<common formats="/latex/xelatex/">\ensuremath{Z}</common>
@@ -196,7 +197,7 @@
 	</template>
 	
 	
-	<!-- Lower case eta. -->
+	<!-- Lower case eta (η). -->
 	
 	<template name="eta" match="eta|greek-small-letter-eta">
 		<common formats="/latex/xelatex/">\ensuremath{\eta}</common>
@@ -211,7 +212,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case eta. -->
+	<!-- Upper case eta (Η). -->
 	
 	<template name="capital-eta" match="eta|greek-capital-letter-eta">
 		<common formats="/latex/xelatex/">\ensuremath{H}</common>
@@ -227,7 +228,7 @@
 	</template>
 	
 	
-	<!-- Lower case theta. -->
+	<!-- Lower case theta (θ). -->
 	
 	<template name="theta" match="theta|greek-small-letter-theta">
 		<common formats="/latex/xelatex/">\ensuremath{\theta}</common>
@@ -242,7 +243,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case theta. -->
+	<!-- Upper case theta (Θ). -->
 	
 	<template name="capital-theta" match="theta|greek-capital-letter-theta">
 		<common formats="/latex/xelatex/">\ensuremath{\Theta}</common>
@@ -258,7 +259,7 @@
 	</template>
 	
 	
-	<!-- Lower case iota. -->
+	<!-- Lower case iota (ι). -->
 	
 	<template name="iota" match="iota|greek-small-letter-iota">
 		<common formats="/latex/xelatex/">\ensuremath{\iota}</common>
@@ -273,7 +274,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case iota. -->
+	<!-- Upper case iota (Ι). -->
 	
 	<template name="capital-iota" match="iota|greek-capital-letter-iota">
 		<common formats="/latex/xelatex/">\ensuremath{I}</common>
@@ -289,7 +290,7 @@
 	</template>
 	
 	
-	<!-- Lower case kappa. -->
+	<!-- Lower case kappa (κ). -->
 	
 	<template name="kappa" match="kappa|greek-small-letter-kappa">
 		<common formats="/latex/xelatex/">\ensuremath{\kappa}</common>
@@ -304,7 +305,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case kappa. -->
+	<!-- Upper case kappa (Κ). -->
 	
 	<template name="capital-kappa" match="kappa|greek-capital-letter-kappa">
 		<common formats="/latex/xelatex/">\ensuremath{K}</common>
@@ -320,7 +321,7 @@
 	</template>
 	
 	
-	<!-- Lower case lambda. -->
+	<!-- Lower case lambda (λ). -->
 	
 	<template name="lambda" match="lambda|greek-small-letter-lambda">
 		<common formats="/latex/xelatex/">\ensuremath{\lambda}</common>
@@ -335,7 +336,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case lambda. -->
+	<!-- Upper case lambda (Λ). -->
 	
 	<template name="capital-lambda" match="lambda|greek-capital-letter-lambda">
 		<common formats="/latex/xelatex/">\ensuremath{\Lambda}</common>
@@ -351,7 +352,7 @@
 	</template>
 	
 	
-	<!-- Lower case mu. -->
+	<!-- Lower case mu (μ). -->
 	
 	<template name="mu" match="mu|greek-small-letter-mu">
 		<common formats="/latex/xelatex/">\ensuremath{\mu}</common>
@@ -366,7 +367,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case mu. -->
+	<!-- Upper case mu (Μ). -->
 	
 	<template name="capital-mu" match="mu|greek-capital-letter-mu">
 		<common formats="/latex/xelatex/">\ensuremath{M}</common>
@@ -382,7 +383,7 @@
 	</template>
 	
 	
-	<!-- Lower case nu. -->
+	<!-- Lower case nu (ν). -->
 	
 	<template name="nu" match="nu|greek-small-letter-nu">
 		<common formats="/latex/xelatex/">\ensuremath{\nu}</common>
@@ -397,7 +398,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case nu. -->
+	<!-- Upper case nu (Ν). -->
 	
 	<template name="capital-nu" match="nu|greek-capital-letter-nu">
 		<common formats="/latex/xelatex/">\ensuremath{N}</common>
@@ -413,7 +414,7 @@
 	</template>
 	
 	
-	<!-- Lower case xi. -->
+	<!-- Lower case xi (ξ). -->
 	
 	<template name="xi" match="xi|greek-small-letter-xi">
 		<common formats="/latex/xelatex/">\ensuremath{\xi}</common>
@@ -428,7 +429,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case xi. -->
+	<!-- Upper case xi (Ξ). -->
 	
 	<template name="capital-xi" match="xi|greek-capital-letter-xi">
 		<common formats="/latex/xelatex/">\ensuremath{\Xi}</common>
@@ -444,7 +445,7 @@
 	</template>
 	
 	
-	<!-- Lower case omicron. -->
+	<!-- Lower case omicron (ο). -->
 	
 	<template name="omicron" match="omicron|greek-small-letter-omicron">
 		<common formats="/latex/xelatex/">\ensuremath{o}</common>
@@ -459,7 +460,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case omicron. -->
+	<!-- Upper case omicron (Ο). -->
 	
 	<template name="capital-omicron" match="omicron|greek-capital-letter-omicron">
 		<common formats="/latex/xelatex/">\ensuremath{O}</common>
@@ -475,7 +476,7 @@
 	</template>
 	
 	
-	<!-- Lower case pi. -->
+	<!-- Lower case pi (π). -->
 	
 	<template name="pi" match="pi|greek-small-letter-pi">
 		<common formats="/latex/xelatex/">\ensuremath{\pi}</common>
@@ -490,7 +491,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case pi. -->
+	<!-- Upper case pi (Π). -->
 	
 	<template name="capital-pi" match="pi|greek-capital-letter-pi">
 		<common formats="/latex/xelatex/">\ensuremath{\Pi}</common>
@@ -506,7 +507,7 @@
 	</template>
 	
 	
-	<!-- Lower case rho. -->
+	<!-- Lower case rho (ρ). -->
 	
 	<template name="rho" match="rho|greek-small-letter-rho">
 		<common formats="/latex/xelatex/">\ensuremath{\rho}</common>
@@ -521,7 +522,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case rho. -->
+	<!-- Upper case rho (Ρ). -->
 	
 	<template name="capital-rho" match="rho|greek-capital-letter-rho">
 		<common formats="/latex/xelatex/">\ensuremath{P}</common>
@@ -537,7 +538,7 @@
 	</template>
 	
 	
-	<!-- Lower case sigma. -->
+	<!-- Lower case sigma (σ). -->
 	
 	<template name="sigma" match="sigma|greek-small-letter-sigma">
 		<common formats="/latex/xelatex/">\ensuremath{\sigma}</common>
@@ -552,7 +553,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case sigma. -->
+	<!-- Upper case sigma (Σ). -->
 	
 	<template name="capital-sigma" match="sigma|greek-capital-letter-sigma">
 		<common formats="/latex/xelatex/">\ensuremath{\Sigma}</common>
@@ -568,7 +569,7 @@
 	</template>
 	
 	
-	<!-- Lower case tau. -->
+	<!-- Lower case tau (τ). -->
 	
 	<template name="tau" match="tau|greek-small-letter-tau">
 		<common formats="/latex/xelatex/">\ensuremath{\tau}</common>
@@ -583,7 +584,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case tau. -->
+	<!-- Upper case tau (Τ). -->
 	
 	<template name="capital-tau" match="tau|greek-capital-letter-tau">
 		<common formats="/latex/xelatex/">\ensuremath{T}</common>
@@ -599,7 +600,7 @@
 	</template>
 	
 	
-	<!-- Lower case upsilon. -->
+	<!-- Lower case upsilon (υ). -->
 	
 	<template name="upsilon" match="upsilon|greek-small-letter-upsilon">
 		<common formats="/latex/xelatex/">\ensuremath{\upsilon}</common>
@@ -614,7 +615,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case upsilon. -->
+	<!-- Upper case upsilon (Υ). -->
 	
 	<template name="capital-upsilon" match="upsilon|greek-capital-letter-upsilon">
 		<common formats="/latex/xelatex/">\ensuremath{\Upsilon}</common>
@@ -630,12 +631,12 @@
 	</template>
 	
 	
-	<!-- Lower case phi. -->
+	<!-- Lower case phi (ϕ). -->
 	
 	<template name="phi" match="phi|greek-phi-symbol">
 		<common formats="/latex/xelatex/">\ensuremath{\phi}</common>
 		<html><xsl:text disable-output-escaping="yes">&amp;phi;</xsl:text></html>
-		<!-- U+03C6 GREEK PHI SYMBOL -->
+		<!-- U+03C6 GREEK PHI SYMBOL (for consistency with LaTeX) -->
 		<xhtml><span class="unicode"><xsl:text>ϕ</xsl:text></span></xhtml>
 	</template>
 	
@@ -645,7 +646,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case phi. -->
+	<!-- Upper case phi (Φ). -->
 	
 	<template name="capital-phi" match="phi|greek-capital-letter-phi">
 		<common formats="/latex/xelatex/">\ensuremath{\Phi}</common>
@@ -661,7 +662,7 @@
 	</template>
 	
 	
-	<!-- Lower case chi. -->
+	<!-- Lower case chi (χ). -->
 	
 	<template name="chi" match="chi|greek-small-letter-chi">
 		<common formats="/latex/xelatex/">\ensuremath{\chi}</common>
@@ -676,7 +677,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case chi. -->
+	<!-- Upper case chi (Χ). -->
 	
 	<template name="capital-chi" match="chi|greek-capital-letter-chi">
 		<common formats="/latex/xelatex/">\ensuremath{X}</common>
@@ -692,7 +693,7 @@
 	</template>
 	
 	
-	<!-- Lower case psi. -->
+	<!-- Lower case psi (ψ). -->
 	
 	<template name="psi" match="psi|greek-small-letter-psi">
 		<common formats="/latex/xelatex/">\ensuremath{\psi}</common>
@@ -707,7 +708,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case psi. -->
+	<!-- Upper case psi (Ψ). -->
 	
 	<template name="capital-psi" match="psi|greek-capital-letter-psi">
 		<common formats="/latex/xelatex/">\ensuremath{\Psi}</common>
@@ -723,7 +724,7 @@
 	</template>
 	
 	
-	<!-- Lower case omega. -->
+	<!-- Lower case omega (ω). -->
 	
 	<template name="omega" match="omega|greek-small-letter-omega">
 		<common formats="/latex/xelatex/">\ensuremath{\omega}</common>
@@ -738,7 +739,7 @@
 		</common>
 	</template>
 	
-	<!-- Upper case omega. -->
+	<!-- Upper case omega (Ω). -->
 	
 	<template name="capital-omega" match="omega|greek-capital-letter-omega">
 		<common formats="/latex/xelatex/">\ensuremath{\Omega}</common>
