root:
             creates   file:./
             creates   file:plan.py
             creates   step:./plan.py

file:plan.py
               state = STATIC
          created by   root:
            consumes   file:./
            supplies   step:./plan.py

file:./
               state = STATIC
          created by   root:
            supplies   file:dst.pdf
            supplies   file:notes.pdf
            supplies   file:plan.py
            supplies   file:src.pdf
            supplies   step:./plan.py
            supplies   step:rr-add-notes-pdf src.pdf notes.pdf dst.pdf

step:./plan.py
               state = SUCCEEDED
          inp_digest = same
          created by   root:
            consumes   file:./
            consumes   file:plan.py
             creates   file:notes.pdf
             creates   file:src.pdf
             creates   step:rr-add-notes-pdf src.pdf notes.pdf dst.pdf

file:notes.pdf
               state = STATIC
          created by   step:./plan.py
            consumes   file:./
            supplies   step:rr-add-notes-pdf src.pdf notes.pdf dst.pdf

file:src.pdf
               state = STATIC
          created by   step:./plan.py
            consumes   file:./
            supplies   step:rr-add-notes-pdf src.pdf notes.pdf dst.pdf

step:rr-add-notes-pdf src.pdf notes.pdf dst.pdf
               state = SUCCEEDED
          created by   step:./plan.py
            consumes   file:./
            consumes   file:notes.pdf
            consumes   file:src.pdf
             creates   file:dst.pdf
            supplies   file:dst.pdf

file:dst.pdf
               state = BUILT
          created by   step:rr-add-notes-pdf src.pdf notes.pdf dst.pdf
            consumes   file:./
            consumes   step:rr-add-notes-pdf src.pdf notes.pdf dst.pdf
