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diff --git a/ipl/gpacks/tiger/tgrsort b/ipl/gpacks/tiger/tgrsort
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+#!/bin/sh
+#
+#  tgrsort [file] -- sort TIGER line chains
+#
+#  Sort keys are:
+#
+#  1. CFCC feature class, in this order:
+#	boundary
+#	water
+#	other topographic feature  (rare)
+#	road
+#	railroad
+#	pipeline, power line, etc.
+#	landmark
+#	unclassified
+#
+#   2. Major category, largest (least significant) first
+#
+#   The feature class and category sorting is chosen so that more important
+#   chains are drawn later, obscuring lesser chains, instead of the reverse.
+#
+#   Note that this sorting can reverse the positions of the first two lines
+#   of the file (the min/max lines), but tgrmap.icn can handle that.
+
+TR1=FHEABCDX
+TR2=JKLMNPQR
+
+cat $1 |
+tr $TR1 $TR2 |
+sort -t: -k 1.1,1.1 -k 1.2,1.3r -k 1.4 |
+tr $TR2 $TR1