file can be found.
In some rare cases, you may want to have different versions of these files
-for different architectures or OSes. If files named debian/package.foo.arch
-or debian/package.foo.os exist, where "arch" and "os" are the same as the
+for different architectures or OSes. If files named debian/package.foo.ARCH
+or debian/package.foo.OS exist, where "ARCH" and "OS" are the same as the
output of "dpkg-architecture -qDEB_HOST_ARCH" /
"dpkg-architecture -qDEB_HOST_ARCH_OS",
then they will be used in preference to other, more general files.