Hi, When I use org 8.3.6, it works correctly, but when I use org 9.0.3, it seems org-babel-tangle ignores noweb-ref property. For example, using the example from http://orgmode.org/manual/noweb_002dref.html: #+BEGIN_SRC sh :tangle yes :noweb yes :shebang #!/bin/sh <> #+END_SRC * the mount point of the fullest disk :PROPERTIES: :noweb-ref: fullest-disk :END: ** query all mounted disks #+BEGIN_SRC sh df \ #+END_SRC ** strip the header row #+BEGIN_SRC sh |sed '1d' \ #+END_SRC ** sort by the percent full #+BEGIN_SRC sh |awk '{print $5 " " $6}'|sort -n |tail -1 \ #+END_SRC ** extract the mount point #+BEGIN_SRC sh |awk '{print $2}' #+END_SRC When I do org-babel-tangle, the resulting file only has #!/bin/sh. With 8.3.6, I get the following file correctly: #!/bin/sh df \ df \ |sed '1d' \ |awk '{print $5 " " $6}'|sort -n |tail -1 \ |awk '{print $2}' I set org-use-property-inheritance to ("noweb-ref") with (add-to-list 'org-use-property-inheritance "noweb-ref"). Please let me know if I'm doing something wrong. Best, Joon