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-rw-r--r--docs/whats_new_in_3_0_0.rst3
1 files changed, 2 insertions, 1 deletions
diff --git a/docs/whats_new_in_3_0_0.rst b/docs/whats_new_in_3_0_0.rst
index 24e9423..b5e6801 100644
--- a/docs/whats_new_in_3_0_0.rst
+++ b/docs/whats_new_in_3_0_0.rst
@@ -20,7 +20,8 @@ New Features
Railroad diagramming
--------------------
An excellent new enhancement is the new railroad diagram
-generator for documenting pyparsing parsers::
+generator for documenting pyparsing parsers. You need to install
+`Railroad-Diagram Generator package` https://pypi.org/project/railroad-diagrams/ to test this example::
import pyparsing as pp