Functional grammar, as explained by Halliday (1994) is concerned with meanings.
00:00 Introduction
00:14 Framework of Grammar
01:12 Grammar
06:08 Branches of Grammar
08:16 Functional Grammar
12:24 Descriptive Grammar
15:18 Word Level Grammar
16:44 Sentence Level Grammar
17:40 Prescriptive Grammar
19:42 Difference between Descriptive and Prescriptive Grammar
22:23 Questions on Functional Grammar