Merge PR #9389: Implement a method for manual declaration of implicits.

Reviewed-by: SkySkimmer
Reviewed-by: Zimmi48
Reviewed-by: ejgallego
Ack-by: gares
Ack-by: jashug

1 files changed, 7 insertions, 0 deletions

diff --git a/doc/sphinx/language/gallina-extensions.rst b/doc/sphinx/language/gallina-extensions.rst
index f1733a5ebf..8b7e5c9a02 100644
--- a/doc/sphinx/language/gallina-extensions.rst
+++ b/doc/sphinx/language/gallina-extensions.rst
@@ -1651,6 +1651,13 @@ Declaring Implicit Arguments
    To know which are the implicit arguments of an object, use the
    command :cmd:`Print Implicit` (see :ref:`displaying-implicit-args`).
 
+.. warn:: Argument number @num is a trailing implicit so must be maximal.
+
+   For instance in
+
+   .. coqtop:: all
+
+      Arguments prod _ [_].
 
 Automatic declaration of implicit arguments
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~