From 40df55c7c08d905c3312ae129a4bbbe1dd28dbff Mon Sep 17 00:00:00 2001
From: Christoph Lehmann <christoph.lehmann@ufz.de>
Date: Sat, 16 Sep 2023 11:14:53 +0200
Subject: [PATCH] [Doc] Extended documentation of <is_linear>

---
 .../prj/processes/process/ComponentTransport/t_is_linear.md | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Documentation/ProjectFile/prj/processes/process/ComponentTransport/t_is_linear.md b/Documentation/ProjectFile/prj/processes/process/ComponentTransport/t_is_linear.md
index 521797f6c6e..76ed6c9fb52 100644
--- a/Documentation/ProjectFile/prj/processes/process/ComponentTransport/t_is_linear.md
+++ b/Documentation/ProjectFile/prj/processes/process/ComponentTransport/t_is_linear.md
@@ -1,10 +1,12 @@
-This flag will enable two optimizations for the ComponentTransport process:
+This flag enables two optimizations for the ComponentTransport process:
 
 1. the global equation systems are assembled only once, in the first timestep,
    and reused subsequently
 2. the non-linear solver will converge in a single iteration in each timestep
 
 \attention
-With this option enabled, OGS will produce correct results only if the process equations are linear.
+With this option enabled, **OGS will produce correct results only if the process equations are linear**.
 OGS will not detect any non-linearities. It is the responsibility of the user to
 ensure that the assembled equation systems are linear, indeed!
+Furthermore, the material properties and parameters used in the process's
+equations must **not carry any time dependence**.
-- 
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