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NOT.1:4.3 - Locate the information and operations behind the marks

Follow the user through the proposed operation. Which part of the expression identifies a participant, establishes a relation or permits a transformation? Which part is supplied by a convention, the surrounding account or an interaction with a tool?

This examination can reveal three different needs:

  • The difference is known but cannot be expressed or recovered under the available rules. Design a way to carry it.
  • The expression carries the difference, but obtaining or changing it is too costly. Change the arrangement or the supported operation; NOT.7 develops that redesign.
  • The practice has not supplied the needed distinction or inference. Obtain that contribution from the relevant practitioner or method before prescribing how it must be expressed.

Test the whole expression and its usable context. A symbol may be ambiguous in isolation yet clear in a composition. A diagram may be clear to a prepared human reader while its plain-text export loses the grouping on which that reading depends. Preserve the effective context or revise the notation for the receiving conditions.