Which of the following is true about "seniority rules"?

Josh’s headmaster fought to keep him, but his hands were tied; under the state’s strict "last in, first out" seniority rules, enshrined in statute, the most recent recruits had to be fired first, regardless of ability.

A distinguishing feature of Halliday’s social-semiotic account of language is that meanings are seen to relate explicitly to issues of social context. Part of this context includes the Field, or subject matter that is to be communicated; when the Field changes, representational meanings change also. So, the choice of topic is part of the context of communication, which has an evident impact on the text. It is the need to communicate about something in the social context which motivates some of the meanings made in texts. Another part of the context is the Tenor, or roles and relationships between the interactants in the situation: these roles and relationships give rise to interactional meanings.