From cbc8e27c3e393ddded750aade2adeea784f1f733 Mon Sep 17 00:00:00 2001
From: Matthias Maier <tamiko@43-1.org>
Date: Wed, 21 Mar 2018 16:52:22 -0500
Subject: [PATCH] doc: Update documentation

---
 doc/users/testsuite.html | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/doc/users/testsuite.html b/doc/users/testsuite.html
index 66bc8af3da..d6fef94645 100644
--- a/doc/users/testsuite.html
+++ b/doc/users/testsuite.html
@@ -148,6 +148,17 @@ Test project .../examples/step-1
 Total Test time (real) =   1.72 sec</pre>
     </p>
 
+    <p>
+      <i>Remark:</i> If the parameter file ends in <code>.prm.in</code>
+      instead of <code>.prm</code>, it will be configured/preprocessed to a
+      test.prm file. This is done with the CMake macro
+      <code>CONFIGURE_FILE</code> that replaces all strings
+      <code>@VARIABLE@</code> with the contents of the corresponding CMake
+      variable. This is useful in particular to conveniently substitute
+      <code>@SOURCE_DIR@</code> with the full source directory path of the
+      test.
+    </p>
+
     <p>
       <i>Remark:</i> The test driver will compare the combined output
       stream of stdout and stderr against the comparison file. If the test
-- 
2.39.5