1. a method for determining a table structure, the method comprising: determining a table structure respective to a first two cells of a spatially ordered sequence of rectangular cells, the table structure including elements indicative of the first two cells and at least one element indicative of a structural relationship between the first two cells; defining a minimum rectangular bounding box containing the cells of the table structure; updating the table structure with additional structure including an element indicative of a next cell of the spatially ordered sequence of rectangular cells and at least one element indicative of a structural relationship between the next cell and the minimum rectangular bounding box; and repeating the defining and updating until the cells of the ordered sequence of rectangular cells are exhausted.