Record the maintainer's answers: goal 5.7's test is a part that does nothing where written, null alone on stdin is misuse, and the CLI reads only the public API

README.md

@@ -908,8 +908,10 @@ Where the project is heading; the sections before Audience document what ships t
    5. `[SE]` selects one row of a table, and means that row wherever you write it.
    6. If two people could read a template differently, loading it fails, and the
       error shows how to write each meaning.
-   7. A spelling that suggests you meant something else — such as a range with nothing
-      to draw, `int(5,5)` — fails to load, and the error shows what to write.
+   7. A spelling that suggests you meant something else fails to load, and the error
+      shows what to write. Such a spelling holds a part that does nothing where it is
+      written, such as a range with nothing to draw, `int(5,5)`; a default written out
+      is not one.
    8. When a clearer name turns up, it replaces the old one, even if that needs a new
       major version.
    9. Everything fejkdata renders is written as a template: on the command line, in a