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-rw-r--r--doc/using/InvokingGHDL.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/using/InvokingGHDL.rst b/doc/using/InvokingGHDL.rst
index 64c1610e1..22061445e 100644
--- a/doc/using/InvokingGHDL.rst
+++ b/doc/using/InvokingGHDL.rst
@@ -257,6 +257,9 @@ Options
which means VHDL-93 with relaxed rules. For details on ``STANDARD``
values see section :ref:`VHDL_standards`.
+ This option resets the effect of :option:`-frelaxed`, so it should
+ be the first option.
+
.. option:: -fsynopsys
Allow the use of synopsys non-standard packages