According to ISO 10241-1:2011, Table 1 and 6.5, a terminological entry can have either a definition or a non-verbal representation, or both.
As per ISO 10241-1:2011, 6.5, non-verbal representations can be used to exemplify the concept … and usually comprise visual representations such as figures (e.g. photographs and pictographic representations, technical drawings, charts, graphs, diagrams,
etc.), tables and mathematical expressions. In some non-verbal representations, colour is semantically significant. In a multilingual standard, it is recommended to use language-independent non-verbal representations.
Examples of non-verbal representations are provided in ISO 10241-1:2011
A.2.19 Examples showing non-verbal representations within definitions, and grammatical information
A.2.20 Example showing a non-verbal representation within a note.
ISO 10241-1:2011 provides contradictory information regarding whether there can be more than one non-verbal representation:
Table 1 says "non-repeatable" (i.e. occurrence ?)
6.5 clearly allows more than one ("If more than one …") (i.e. occurrence *)
ISO 10241-1:2011 provides contradictory information regarding whether there can be more than one non-verbal representation:
We should model it as: