diff --git a/doc/manual.rst b/doc/manual.rst
index 9f614c2cde..1b65ae9eea 100644
--- a/doc/manual.rst
+++ b/doc/manual.rst
@@ -6190,6 +6190,7 @@ There are two pseudo directories:
    its semantics are: *Use the search path to look for module name but ignore the standard
    library locations*. In other words, it is the opposite of `std`.
 
+It is recommended and preferred but not currently enforced that all stdlib module imports include the std/ "pseudo directory" as part of the import name.
 
 From import statement
 ---------------------