Hello, I use Win7 with Miktex and wish to use the aspect ratio package in LyX but I don't manage do make it work. I used the usepackage{ar} command but it didn't work. I managed to download an archive from here http://mirrors.ctan.org/systems/win32/miktex/tm/packages/aspectratio.tar.lzma
and I managed to run the ar.tex and compile it to document. but I did not managed to compile simple LyX document with the \AR command. Thanks for your help