From 0e72e53ef4693e022dbb83b87924ae7470e42e8f Mon Sep 17 00:00:00 2001
From: Kaz Kylheku <kaz@kylheku.com>
Date: Wed, 30 Jun 2021 22:37:17 -0700
Subject: doc: include opt-error in diagram.

* txr.1: Exception hierarchy diagram now includes opt-error.
---
 txr.1 | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/txr.1 b/txr.1
index e00bc31b..083660ce 100644
--- a/txr.1
+++ b/txr.1
@@ -47048,6 +47048,8 @@ subtype of every exception type:
                       +--- syntax-error
                       |
                       +--- eval-error
+                      |
+                      +--- opt-error
 .brev
 
 Program designers are encouraged to derive new error exceptions from the
-- 
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