Editing Systemic functional grammar (section)

==Children’s grammar==
Michael Halliday (1973) outlined seven functions of language with regard to the grammar used by children:<!--So where is Halliday's 1973 ref?--><ref>Butler, C.S., ''Structure and function'' (2003), John Benjamins, p. 415</ref>
*the instrumental function serves to manipulate the environment, to cause certain events to happen;
*the regulatory function of language is the control of events;
*the representational function is the use of language to make statements, convey facts and knowledge, explain, or report to represent reality as the speaker/writer sees it;
*the interactional function of language serves to ensure social maintenance;
*the personal function is to express emotions, personality, and "gut-level" reactions;
*the heuristic function used to acquire knowledge, to learn about the environment;
*the imaginative function serves to create imaginary systems or ideas.