summary refs log tree commit diff
path: root/pnmindex.html
diff options
context:
space:
mode:
Diffstat (limited to 'pnmindex.html')
-rw-r--r--pnmindex.html17
1 files changed, 15 insertions, 2 deletions
diff --git a/pnmindex.html b/pnmindex.html
index 29189d14..65ccc9a3 100644
--- a/pnmindex.html
+++ b/pnmindex.html
@@ -69,13 +69,19 @@ inside a <i>N</i> x <i>N</i> pixel box without changing its aspect ratio.
 
 <p>If the input image is already smaller than this, its size remains the same
 in the output.
+
+<p>The value must be at least 1.
   
 <p>The default is 100.
 
 <dt><b>-across=</b><i>N</i>
 
-<dd>The number of thumbnails in each row.  Default is 6.
+<dd>This is the number of thumbnails in each row.
+
+<p>The value must be at least 1.
 
+<p>The default is 6.
+  
 <dt><b>-black</b>
 
 <dd>This controls the color of the padding between the images; by default it
@@ -119,7 +125,13 @@ no input image is PPM.
 </dl>
 
 
-<h2 id="seealso">SEE ALSO</h2>
+<h2 id="history">HISTORY</h2>
+
+<p>Before Netpbm 11.05 (December 2023), the Netpbm common option <b>-plain</b>
+was not implemented.
+
+
+  <h2 id="seealso">SEE ALSO</h2>
 
 <b><a href="pamscale.html">pamscale</a></b>,
 
@@ -152,6 +164,7 @@ no input image is PPM.
 <li><a href="#synopsis">SYNOPSIS</a>
 <li><a href="#description">DESCRIPTION</a>
 <li><a href="#options">OPTIONS</a>
+<li><a href="#history">HISTORY</a>
 <li><a href="#seealso">SEE ALSO</a>
 <li><a href="#author">AUTHOR</a>
 </ul>