diff --git a/Doc/perl/ltxmarkup.perl b/Doc/perl/ltxmarkup.perl
new file mode 100644
index 000000000000..9136e61f696b
--- /dev/null
+++ b/Doc/perl/ltxmarkup.perl
@@ -0,0 +1,51 @@
+# LaTeX2HTML support for the ltxmarkup package.  Doesn't do indexing.
+
+package main;
+
+
+sub ltx_next_argument{
+    my $param;
+    $param = missing_braces()
+      unless ((s/$next_pair_pr_rx/$param=$2;''/eo)
+	      ||(s/$next_pair_rx/$param=$2;''/eo));
+    return $param;
+}
+
+
+sub do_cmd_macro{
+    local($_) = @_;
+    my $macro = ltx_next_argument();
+    return "<tt class='macro'>&#92;$macro</tt>" . $_;
+}
+
+sub do_cmd_env{
+    local($_) = @_;
+    my $env = ltx_next_argument();
+    return "<tt class='environment'>&#92;$env</tt>" . $_;
+}
+
+sub do_env_macrodesc{
+    local($_) = @_;
+    my $macro = ltx_next_argument();
+    my $params = ltx_next_argument();
+    return "\n<dl class='macrodesc'>"
+         . "\n<dt><b><tt class='macro'>&#92;$macro</tt></b>"
+         . "\n                         $params"
+	 . "\n<dd>"
+	 . $_
+	 . "</dl>";
+}
+
+sub do_env_envdesc{
+    local($_) = @_;
+    my $env = ltx_next_argument();
+    my $params = ltx_next_argument();
+    return "\n<dl class='envdesc'>"
+         . "\n<dt><b><tt class='environment'>&#92;$env</tt></b>"
+         . "\n                               $params"
+	 . "\n<dd>"
+	 . $_
+	 . "</dl>";
+}
+
+1;				# Must end with this, because Perl is bogus.