diff --git a/font.subx b/font.subx
index dd822c71..66a82850 100644
--- a/font.subx
+++ b/font.subx
@@ -4,11 +4,15 @@
 # See https://en.wikipedia.org/wiki/GNU_Unifont#The_.hex_font_format
 # Website: http://unifoundry.com/unifont/index.html
 # License: http://unifoundry.com/LICENSE.txt (GPL v2)
+#
+# This file can only contain:
+#   - 2-letter hex bytes, optionally followed by '/' and single-word comments, and
+#   - line comments after '#'
 # Each glyph consists of a 1-byte size followed by a 16-byte bitmap.
-# The size can currently be only 8 or 16 (10).
-# * If it's 8, the glyph is 8 pixels wide, each row consists of one byte, and
+# The size can currently be only '08' or '10' (16).
+# * If it's '08', the glyph is 8 pixels wide, each row consists of one byte, and
 #   the last 8 bytes of the bitmap are ignored.
-# * If it's 16, the glyph is 16 pixels wide, and each row consists of two
+# * If it's '10', the glyph is 16 pixels wide, and each row consists of two
 #   bytes.
 
 # 0x00-0x1f: unprintable ASCII
diff --git a/translate b/translate
index e9fec574..2ecdbf7b 100755
--- a/translate
+++ b/translate
@@ -71,8 +71,8 @@ fi
 
 dd if=labels of=code.img seek=$DEBUG conv=notrunc  # keep this sync'd with abort.subx
 
-## Some space for font data at another well-defined location
-cat font.subx   |sed 's,#.*,,' |sed 's,/[^ ]*,,'    |linux/hex    > a.font
+## Font data at another well-defined location
+cat font.subx   |sed 's,/[^ ]*,,'    |linux/hex    > a.font
 
 if [ `stat --printf="%s" a.bin` -ge $(( ($DEBUG - $FONT) * 512 )) ]
 then
diff --git a/translate_emulated b/translate_emulated
index 3ff4b24c..ec75b5ba 100755
--- a/translate_emulated
+++ b/translate_emulated
@@ -12,7 +12,7 @@ export DISK=20160  # 20*16*63 512-byte sectors = almost 10MB
 dd if=/dev/zero of=code.img count=$DISK
 # code: sectors 0-8999
 # font: sectors 9000-10079  (1080 sectors = space enough for 16k glyphs (1080 * 512 / 33 bytes per glyph))
-export FONT=9000
+export FONT=9000  # keep this sync'd with boot.subx
 # debug: sector 10080 onwards
 export DEBUG=10080
 
@@ -75,8 +75,8 @@ fi
 
 dd if=labels of=code.img seek=$DEBUG conv=notrunc  # keep this sync'd with abort.subx
 
-## Some space for font data at another well-defined location
-cat font.subx   |sed 's,#.*,,' |sed 's,/[^ ]*,,'    |linux/hex    > a.font
+## Font data at another well-defined location
+cat font.subx   |sed 's,/[^ ]*,,'    |linux/hex    > a.font
 
 if [ `stat --printf="%s" a.bin` -ge $(( ($DEBUG - $FONT) * 512 )) ]
 then