Update runtime files.
diff --git a/runtime/doc/if_pyth.txt b/runtime/doc/if_pyth.txt
index 9e2d301..4f04199 100644
--- a/runtime/doc/if_pyth.txt
+++ b/runtime/doc/if_pyth.txt
@@ -1,4 +1,4 @@
-*if_pyth.txt* For Vim version 8.1. Last change: 2019 May 04
+*if_pyth.txt* For Vim version 8.1. Last change: 2019 Jul 21
VIM REFERENCE MANUAL by Paul Moore
@@ -34,7 +34,7 @@
the `:python` command is working: >
:python print "Hello"
-:[range]py[thon] << {endmarker}
+:[range]py[thon] << [endmarker]
{script}
{endmarker}
Execute Python script {script}.
@@ -42,9 +42,11 @@
feature wasn't compiled in. To avoid errors, see
|script-here|.
-{endmarker} must NOT be preceded by any white space. If {endmarker} is
-omitted from after the "<<", a dot '.' must be used after {script}, like
-for the |:append| and |:insert| commands.
+The {endmarker} below the {script} must NOT be preceded by any white space.
+
+If [endmarker] is omitted from after the "<<", a dot '.' must be used after
+{script}, like for the |:append| and |:insert| commands.
+
This form of the |:python| command is mainly useful for including python code
in Vim scripts.