Z:gnu-man-db-manpages--2e2fb3-Instead of formatting the manu/en

Instead of formatting the manual page in the usual way, output its source converted to the specified I. If you already know the encoding of the source file, you can also use B<%manconv%>(1) directly. However, this option allows you to convert several manual pages to a single encoding without having to explicitly state the encoding of each, provided that they were already installed in a structure similar to a manual page hierarchy.