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

file:./
               state = STATIC
          created by   root:
            supplies   file:analyzed.txt
            supplies   file:data.txt
            supplies   file:plan.py
            supplies   step:runpy ./plan.py
            supplies   step:runsh cat analyzed.txt
            supplies   step:runsh grep -i foo data.txt > analyzed.txt

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

step:runpy ./plan.py
               state = SUCCEEDED
             env_var = STEPUP_PATH_FILTER [amended]
                 ngm = ['data.txt'] {}
           explained = yes
          created by   root:
            consumes   file:./
            consumes   file:plan.py
             creates   file:data.txt
             creates   step:runsh cat analyzed.txt
             creates   step:runsh grep -i foo data.txt > analyzed.txt

file:analyzed.txt
               state = BUILT
          created by   step:runsh grep -i foo data.txt > analyzed.txt
            consumes   file:./
            consumes   step:runsh grep -i foo data.txt > analyzed.txt
            supplies   step:runsh cat analyzed.txt

step:runsh cat analyzed.txt
               state = SUCCEEDED
           explained = yes
          created by   step:runpy ./plan.py
            consumes   file:./
            consumes   file:analyzed.txt

file:data.txt
               state = STATIC
          created by   step:runpy ./plan.py
            consumes   file:./
            supplies   step:runsh grep -i foo data.txt > analyzed.txt

step:runsh grep -i foo data.txt > analyzed.txt
               state = SUCCEEDED
           explained = yes
          created by   step:runpy ./plan.py
            consumes   file:./
            consumes   file:data.txt
             creates   file:analyzed.txt
            supplies   file:analyzed.txt
