upverter/schematic-file-converter — pull request #83 by patrickyeon (2012-04-29 05:03:27+00:00)
Title: Adding shapes to top-level schematic

Many tools allow for shapes drawn directly onto a schematic sheet (ie
not attached to a certain component). I can think of some pretty nasty
hacks to approximate that in the current format, but I think it would be
friendlier to just extend the format. Opening up the pull request to
discuss that.

Docs, tests not updated. I'll gladly do that before a merge if/when there's an OK on the idea.

For an example of the difference it would make, see http://imgur.com/a/atoDb which has the output of two schematic sheets from a Xilinx reference design, first without top-level shapes, and then with. (Images rendered from an ugly pile of code I intend to tidy up and send your way soon).