The diagram below depicts the data flow that supports this page (and also generates "makevile", the "workhorse" makefile).
Note: "ddf_get" retrieves "#DDF" lines from all hand-edited files (including scripts, which also document their output files). It stores the results in "a_ddf/file_sets.yml", augmenting the information found in "a_etc/ddf.yml". For more information, see the #DDF tutorial.