Returns the string beginning at a given position with an optional length.
If length not specific, will return the rest of the string.
string: How neat is that?{{ string | substr(0, 3) }}{{ string | substr(4, 4) }}{{ string | substr(-8, 8) }}{{ Statamic::modify($string)->substr([0, 3]) }}{{ Statamic::modify($string)->substr([4, 4]) }}{{ Statamic::modify($string)->substr([-8, 8]) }}Howneatis that?
