Cassius, my tool for formal reasoning about web page layout, can be used in a lot of ways. You can use it to lay out web pages, much like a browser; you can use it to find bugs like overlapping text; you can use it to debug web pages; or you can use it to synthesize CSS files from examples. For each of these uses, Cassius provides a convenient command-line tool. Since most of these tools use the same back-end, these command-line tools share many options and flags. The old way: multiple files ...
