Martin (1992: 571):
First and second order tenor would be dealt with as the difference between register (tenor) and discourse semantics (NEGOTIATION) here;
For Halliday, tenor is the interpersonal dimension of context. The relation between first and second order tenor is projection.
Martin's proposal is to reconstrue:
- first order tenor as a dimension of register (misconstrued as context), and
- second order tenor as a dimension of discourse semantics.
That is, Martin misconstrues
- orders of experience (related by projection) as levels of symbolic abstraction (related by realisation), and
- the lower order as the higher level.