Questions about the LUA Script in Mafia II

Could you answer my questions about the LUA Script in Mafia II?

1.What are the differences between the standard LUA grammar and Mafia II LUA grammar?

This is the standard LUA grammar of function:

function
func_name (arguments-list)

statements-list

return

values

end

This is a Mafia II LUA command:

–By eXistenZ34

ply=game.game:GetActivePlayer()

DelayBuffer:Insert(function
(l_1_0)

CommandBuffer:Insert(l_6_0,{

function
(l_1_0)return
ply:SetControlStyle(enums.ControlStyle.LOCKED)end
,

function
(l_2_0)return
ply:AnimPlay(“sc_man_smoke_in”, false)end
,

function
(l_3_0)return
ply:AnimPlay(“sc_man_smoke_stat_a”, false)end
,

function
(l_4_0)return
ply:AnimPlay(“sc_man_smoke_stat_b”, false)end
,

function
(l_5_0)return
ply:AnimPlay(“sc_man_smoke_stat_c”, false)end
,

function
(l_6_0)return
ply:AnimPlay(“sc_man_smoke_stat_d”, false)end
,

function
(l_7_0)return
ply:AnimPlay(“sc_man_smoke_out”, false)end
,

function
(l_8_0)return
ply:SetControlStyle(enums.ControlStyle.FREE)end
})

end
,{l_1_0},500,1,false)

2.Where is the name of a function in Mafia II LUA command?

3.What do the l_1_0 , l_2_0 , l_6_0 , and etc. mean? Are they arguments? Or are they the names of functions?

This is another LUA script of Mafia II:

DelayBuffer:Insert(function
(l_1_0
) xxxxxx end
,{l_1_0
},10000,10,false)

4.What do the two l_1_0
mean?

5.And what is the usage of CommandBuffer:Remove() ?