Nothing beats a table for concisely organizing a large set of data. The columns and rows of a table can be scanned visually for quick comprehension, while headers help users track their location in the table grid. But for a reader who is blind and uses screen reader software, a table can pose some unique and serious challenges.
Many of the accessibility challenges associated with tables can be resolved through the proper use of column and row headers. Headers are created differently according to the software used; the tools and methods in Microsoft Word are different from those in Microsoft PowerPoint and HTML.