Toby,
This sounds like an excellent idea, but could you call them (and perhaps the package) by the more conventional name of swelled rules? I think a lot of people may have a problem identifying the package under the name eline. Perhaps swrule?
Considering that I frankly have no idea what Englische Linien are properly called in English, I don't care. Go ahead. Rename the package. ;-)
Thank you for you permission. I renamed the file from macros/generic/eline.sty ro macros/generic/swrule.sty
Reinhard Zierke for the CTAN team