From fd978ea755147938132a662c4d2ceb7d2f20f31a Mon Sep 17 00:00:00 2001
From: Steve LLamb <38917682+SteveLLamb@users.noreply.github.com>
Date: Mon, 22 Jun 2026 13:50:10 -0700
Subject: [PATCH 1/5] add xwide col (80ch), closes #430

---
 css/smpte.css | 17 +++++++++++++++++
 doc/main.html | 10 ++++++----
 2 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/css/smpte.css b/css/smpte.css
index 9cd5457..a251c5a 100644
--- a/css/smpte.css
+++ b/css/smpte.css
@@ -412,6 +412,19 @@ td.top-cell    { vertical-align: top; }
    width: 20rem;
  }
 
+/* xwide (fits an 80-character listing) */
+
+ table.col-1-xwide tr td:nth-child(1), table.col-1-xwide tr th:nth-child(1),
+ table.col-2-xwide tr td:nth-child(2), table.col-2-xwide tr th:nth-child(2),
+ table.col-3-xwide tr td:nth-child(3), table.col-3-xwide tr th:nth-child(3),
+ table.col-4-xwide tr td:nth-child(4), table.col-4-xwide tr th:nth-child(4),
+ table.col-5-xwide tr td:nth-child(5), table.col-5-xwide tr th:nth-child(5),
+ table.col-6-xwide tr td:nth-child(6), table.col-6-xwide tr th:nth-child(6),
+ table.col-7-xwide tr td:nth-child(7), table.col-7-xwide tr th:nth-child(7),
+ table.col-8-xwide tr td:nth-child(8), table.col-8-xwide tr th:nth-child(8) {
+   min-width: 80ch;
+ }
+
  /* cell width utilities */
 
 th.col-xsmall, td.col-xsmall {
@@ -430,6 +443,10 @@ th.col-wide, td.col-wide {
   width: 20rem;
 }
 
+th.col-xwide, td.col-xwide {
+  min-width: 80ch;
+}
+
 table > caption {
   margin-top: 2em;
   margin-bottom: 1em;
diff --git a/doc/main.html b/doc/main.html
index 3bbcf61..d06c622 100644
--- a/doc/main.html
+++ b/doc/main.html
@@ -1536,14 +1536,16 @@ <h4>Using <code>class</code> attributes</h4>
           <dt><code>col-xsmall</code>;</dt>
           <dt><code>col-small</code>;</dt>
           <dt><code>col-medium</code>;</dt>
-          <dt><code>col-wide</code></dt>
-          <dd>Applied to <code>th</code> or <code>td</code> elements to suggest a relative column width for that cell. These classes provide extra-narrow, narrow, medium, or wide column layouts without using inline <code>style</code> attributes. See <a href="#sec-table-width-nowrap-cell"></a></dd>
+          <dt><code>col-wide</code>;</dt>
+          <dt><code>col-xwide</code></dt>
+          <dd>Applied to <code>th</code> or <code>td</code> elements to suggest a relative column width for that cell. These classes provide extra-narrow, narrow, medium, wide, or extra-wide column layouts without using inline <code>style</code> attributes. <code>col-xwide</code> is sized to fit an 80-character listing. See <a href="#sec-table-width-nowrap-cell"></a></dd>
 
           <dt><code>col-1-xsmall</code> through <code>col-8-xsmall</code>;</dt>
           <dt><code>col-1-small</code> through <code>col-8-small</code>;</dt>
           <dt><code>col-1-medium</code> through <code>col-8-medium</code>;</dt>
-          <dt><code>col-1-wide</code> through <code>col-8-wide</code></dt>
-          <dd>Applied to a <code>table</code> element to suggest relative widths for specific columns. See <a href="#sec-table-width-nowrap-column"></a></dd>
+          <dt><code>col-1-wide</code> through <code>col-8-wide</code>;</dt>
+          <dt><code>col-1-xwide</code> through <code>col-8-xwide</code></dt>
+          <dd>Applied to a <code>table</code> element to suggest relative widths for specific columns. The <code>col-1-xwide</code> through <code>col-8-xwide</code> classes are sized to fit an 80-character listing. See <a href="#sec-table-width-nowrap-column"></a></dd>
 
           <dt><code>col-1-center</code> through <code>col-8-center</code>;</dt>
           <dt><code>col-1-right</code> through <code>col-8-right</code>;</dt>

From 370689dc206c0127ce0370f277cfe4c3ce235cf0 Mon Sep 17 00:00:00 2001
From: Steve LLamb <38917682+SteveLLamb@users.noreply.github.com>
Date: Mon, 22 Jun 2026 13:53:02 -0700
Subject: [PATCH 2/5] update to equiv rem value

---
 css/smpte.css | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/css/smpte.css b/css/smpte.css
index a251c5a..5875e8f 100644
--- a/css/smpte.css
+++ b/css/smpte.css
@@ -422,7 +422,7 @@ td.top-cell    { vertical-align: top; }
  table.col-6-xwide tr td:nth-child(6), table.col-6-xwide tr th:nth-child(6),
  table.col-7-xwide tr td:nth-child(7), table.col-7-xwide tr th:nth-child(7),
  table.col-8-xwide tr td:nth-child(8), table.col-8-xwide tr th:nth-child(8) {
-   min-width: 80ch;
+   min-width: 40rem;
  }
 
  /* cell width utilities */
@@ -444,7 +444,7 @@ th.col-wide, td.col-wide {
 }
 
 th.col-xwide, td.col-xwide {
-  min-width: 80ch;
+  min-width: 40rem;
 }
 
 table > caption {

From 0d1c96772db4a7709b45e1132b5d0f8b396e080d Mon Sep 17 00:00:00 2001
From: Steve LLamb <38917682+SteveLLamb@users.noreply.github.com>
Date: Mon, 22 Jun 2026 13:54:50 -0700
Subject: [PATCH 3/5] bump back to ch

---
 css/smpte.css | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/css/smpte.css b/css/smpte.css
index 5875e8f..7d87ca9 100644
--- a/css/smpte.css
+++ b/css/smpte.css
@@ -444,7 +444,7 @@ th.col-wide, td.col-wide {
 }
 
 th.col-xwide, td.col-xwide {
-  min-width: 40rem;
+  min-width: 80ch;
 }
 
 table > caption {

From 3b4a8f6888bfcc16bd81a9ffbcadb36fb453dbc2 Mon Sep 17 00:00:00 2001
From: Steve LLamb <38917682+SteveLLamb@users.noreply.github.com>
Date: Mon, 22 Jun 2026 14:02:02 -0700
Subject: [PATCH 4/5] 35rem

---
 css/smpte.css | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/css/smpte.css b/css/smpte.css
index 7d87ca9..e1d9cea 100644
--- a/css/smpte.css
+++ b/css/smpte.css
@@ -422,7 +422,7 @@ td.top-cell    { vertical-align: top; }
  table.col-6-xwide tr td:nth-child(6), table.col-6-xwide tr th:nth-child(6),
  table.col-7-xwide tr td:nth-child(7), table.col-7-xwide tr th:nth-child(7),
  table.col-8-xwide tr td:nth-child(8), table.col-8-xwide tr th:nth-child(8) {
-   min-width: 40rem;
+   min-width: 35rem;
  }
 
  /* cell width utilities */
@@ -444,7 +444,7 @@ th.col-wide, td.col-wide {
 }
 
 th.col-xwide, td.col-xwide {
-  min-width: 80ch;
+  min-width: 35rem;
 }
 
 table > caption {

From 85ddc28485f3994ae1d1a840f21d87cc1c19b280 Mon Sep 17 00:00:00 2001
From: Steve LLamb <38917682+SteveLLamb@users.noreply.github.com>
Date: Tue, 23 Jun 2026 09:25:14 -0700
Subject: [PATCH 5/5] bump pub date

---
 doc/main.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/main.html b/doc/main.html
index d06c622..26abfc4 100644
--- a/doc/main.html
+++ b/doc/main.html
@@ -14,7 +14,7 @@
   <meta itemprop="pubConfidential" content="no">
   <!--< meta itemprop="pubTC" content="XX"> -->
   <meta itemprop="pubSuiteTitle" content="HTML Pub">
-  <meta itemprop="pubDateTime" content="2026-06-12">
+  <meta itemprop="pubDateTime" content="2026-06-23">
   <!-- <meta itemprop="pubRevisionOf" content="SMPTE ST XXXX-Y:ZZZZ"> -->
   <title>Tooling and documentation for HTML documents</title>
 </head>