diff --git a/post-processing/z-every-line.pl b/post-processing/z-every-line.pl
new file mode 100755
index 0000000000..5f9d311b6e
--- /dev/null
+++ b/post-processing/z-every-line.pl
@@ -0,0 +1,23 @@
+#!/usr/bin/perl
+
+use strict;
+
+my $z = 0;
+
+# read stdin and any/all files passed as parameters one line at a time
+for (<>) {
+	# if we find a Z word, save it
+	$z = $1 if /Z(\d+(\.\d+)?)/;
+
+	# if we don't have Z, but we do have X and Y
+	if (!/Z/ && /X/ && /Y/ && $z > 0) {
+		# chop off the end of the line (incl. comments), saving chopped section in $1
+		s/\s*([\r\n\;\(].*)//s;
+		# print start of line, insert our Z value then re-add the chopped end of line
+		print "$_ Z$z $1";
+	}
+	else {
+		# nothing interesting, print line as-is
+		print;
+	}
+}