[opensuse-packaging] "Supplements: packageand" documentation?

The xine package contains a "Supplements: packageand(libpulse0:libxine1)" line that I think I saw documented somewhere before. But right now Google doesn't helps me... Any idea about where that documentation (packageand(), locale(), etc.) is? -- To unsubscribe, e-mail: opensuse-packaging+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-packaging+help@opensuse.org