The universe (class/concept/category)
of structured writing contains (encompasses/includes) structured authoring,
...which contains info typing
...which contains DTDs
...which
contains DITA
The universe of information
mapping overlaps the structured writing and structured authoring universes.
The universe of minimalist
writing overlaps the information mapping, structured writing, and structured
authoring universes.
The universe of topic-based
writing overlaps the information mapping, structured writing, and structured
authoring universes.
"Contains"
is not meant to be exclusive.
For example, the universe of DTDs obviously includes more than DITA, just
as the universe of info typing encompasses more than DTDs.
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