From 301e4ebf308df30bd17e3653e6c206fc6141f1a0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9s=20Cuervo?= <acwervo@gmail.com>
Date: Thu, 16 Mar 2023 13:25:12 -0400
Subject: Add rudimentary shapes & a little region docs helper

---
 docs/tcl.md | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'docs')

diff --git a/docs/tcl.md b/docs/tcl.md
index 61755f26..a3d8e2ed 100644
--- a/docs/tcl.md
+++ b/docs/tcl.md
@@ -54,3 +54,23 @@ create`.
 ### Singletons
 
 Capitalized namespace, like `Statements`.
+
+
+### Working with regions
+
+A common pattern I've found myself doing is:
+
+```tcl
+When /thing/ has region /r/ {
+  lassign $r vertices edges
+  lassign $vertices a b c d
+}
+```
+
+Now you can think about addressing
+
+```
+a - b
+|   |
+d - c
+```
\ No newline at end of file
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