diff --git a/tools/document.sh b/tools/document.sh
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+#!/bin/sh
+
+# This is a quick and dirty shell script to extract the words
+# in a source file and return the descriptions of them.
+#
+# Requirements:
+#
+# In your $PATH:
+#
+# - retro
+# - retro-describe
+#
+# Usage:
+#
+# ./describe sourcefile
+
+# Extract    | Split       | Strip Blanks            | Sort | Filter | Terminate    | Generate                               | Strip Blanks
+retro-unu $1 | tr " " "\n" | sed '/^[[:space:]]*$/d' | sort | uniq   | tr "\n" "\0" | xargs -0 -n1 retro-describe | cat -s
+
+# Extract    | Split       | Strip Blanks            | Get first | Sort | Filter | Find Prefixes                   | Generate word names | Terminate    | Generate                               | Strip Blanks
+retro-unu $1 | tr " " "\n" | sed '/^[[:space:]]*$/d' | cut -c1-1 | sort | uniq   | grep "[\.\"\@\!\$\`:&'#$.\(\|]" | sed 's/^/prefix:/'  | tr "\n" "\0" | xargs -0 -n1 retro-describe | cat -s