binding new code block header argument helper function to C-c C-v h

doc/orgcard.tex

@@ -445,6 +445,7 @@ formula, \kbd{:=} a field formula.
 \key{execute code block at point}{C-c C-c}
 \key{open results of code block at point}{C-c C-o}
 \key{check code block at point for errors}{C-c C-v c}
+\key{insert a header argument with completion}{C-c C-v j}
 \key{view expanded body of code block at point}{C-c C-v v}
 \key{view information about code block at point}{C-c C-v I}
 \key{go to named code block}{C-c C-v g}
@@ -460,7 +461,7 @@ formula, \kbd{:=} a field formula.
 \key{tangle code blocks in supplied file}{C-c C-v f}
 \key{ingest all code blocks in supplied file into the Library of Babel}{C-c C-v i}
 \key{switch to the session of the current code block}{C-c C-v z}
-\key{load expanded body of the current code block into a session}{C-c C-v l}
+\key{load the current code block into a session}{C-c C-v l}
 \key{view sha1 hash of the current code block}{C-c C-v a}
 
 \section{Completion}

lisp/ob-keys.el

@@ -74,6 +74,8 @@ functions which are assigned key bindings, and see
     ("f" . org-babel-tangle-file)
     ("\C-c" . org-babel-check-src-block)
     ("c" . org-babel-check-src-block)
+    ("\C-j" . org-babel-insert-header-arg)
+    ("j" . org-babel-insert-header-arg)
     ("\C-l" . org-babel-load-in-session)
     ("l" . org-babel-load-in-session)
     ("\C-i" . org-babel-lob-ingest)