finale

Hi,

Now I am trying to convert a matrix3 variable into a vector variable.
I find the two functions below in the vex document.

float getcomp(matrix , float, int row, int col)
float getcomp(matrix3 , float, int row, int col)

But there is no explanation in the document about the float parameter.
If I know the row and the col, I can get the component which I want, right?
so, what is that float parameter for?

ps. sorry about my poor English, because it's not my native language.