From ae235ea62dada8777dc103f3ae07f102e2bbdfd8 Mon Sep 17 00:00:00 2001
From: Tony Cook <tony@develop=help.com>
Date: Sun, 22 Apr 2001 07:39:16 +0000
Subject: [PATCH] minor clarifications on producing transparent gifs

---
 Imager.pm | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Imager.pm b/Imager.pm
index 8e81935f..872e1503 100644
--- a/Imager.pm
+++ b/Imager.pm
@@ -1583,7 +1583,9 @@ the previous value.
 =item gif_tran_color
 
 A reference to an Imager::Color object, which is the colour to use for
-the palette entry used to represent transparency in the palette.
+the palette entry used to represent transparency in the palette.  You
+need to set the transp option (see L<Quantization options>) for this
+value to be used.
 
 =item gif_positions
 
@@ -1641,6 +1643,9 @@ channel.
 
 =back
 
+This will only be used if the image has an alpha channel, and if there
+is space in the palette for a transparency colour.
+
 =item tr_threshold
 
 The highest alpha value at which a pixel will be made transparent when
-- 
2.39.5