diff --git a/doc/source/operations.rst b/doc/source/operations.rst
index 98adf57..42e8a86 100644
--- a/doc/source/operations.rst
+++ b/doc/source/operations.rst
@@ -38,6 +38,8 @@
                 parameters:
                   ssh.server:
                     permit_root_login: no
+environment  only relevant for nodes, this allows to specify an "environment"
+             into which the node definition is supposed to be place.
 ============ ================================================================
 
 Nodes may be defined in subdirectories. However, node names (filename) must be