Do you know of languages where parsing does not begin at position 0 and proceed linearly to position N? In certain designed 2D/3D languages you can have N pars

Do you know of languages where parsing does not begin at position 0 and proceed linearly to position N? In certain designed 2D/3D languages you can have N parsers that start and end in different places in any direction, potentially even in a random order depending upon the language.