[latex3-commits] [latex3/latex3] main: Docu that l3opacity needs \DocumentMetadata{} (1c76ed8ae)

[github at latex-project.org]

Repository : https://github.com/latex3/latex3
On branch  : main
Link       : https://github.com/latex3/latex3/commit/1c76ed8ae27081c85df02f5d2ad4a39d7290b7dd

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commit 1c76ed8ae27081c85df02f5d2ad4a39d7290b7dd
Author: Yukai Chou <muzimuzhi at gmail.com>
Date:   Wed Feb 28 11:52:20 2024 +0800

    Docu that l3opacity needs \DocumentMetadata{}


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1c76ed8ae27081c85df02f5d2ad4a39d7290b7dd
 l3experimental/l3opacity/l3opacity.dtx | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/l3experimental/l3opacity/l3opacity.dtx b/l3experimental/l3opacity/l3opacity.dtx
index ba251f971..89855729f 100644
--- a/l3experimental/l3opacity/l3opacity.dtx
+++ b/l3experimental/l3opacity/l3opacity.dtx
@@ -65,6 +65,11 @@
 % particular, using Adobe Distiller, you will need to enable transparency
 % in the (text-based) configuration: this is not selectable from the GUI.
 %
+% Note that opacity only takes effect if \cs{DocumentMetadata}|{}| is used
+% \emph{before} \cs[no-index]{documentclass}, which loads and activates
+% the PDF management.
+% See \file{pdfmanagement-testphase.pdf} for more info.
+%
 % \begin{function}[added = 2021-07-01]{\opacity_select:n}
 %   \begin{syntax}
 %     \cs{opacity_select:n} \Arg{expression}