@cindex input-file
@item -i @var{file}
@itemx --input-file=@var{file}
-Read @sc{url}s from @var{file}. If @samp{-} is specified as
-@var{file}, @sc{url}s are read from the standard input. (Use
-@samp{./-} to read from a file literally named @samp{-}.)
+Read @sc{url}s from a local or external @var{file}. If @samp{-} is
+specified as @var{file}, @sc{url}s are read from the standard input.
+(Use @samp{./-} to read from a file literally named @samp{-}.)
If this function is used, no @sc{url}s need be present on the command
line. If there are @sc{url}s both on the command line and in an input
href="@var{url}">} to the documents or by specifying
@samp{--base=@var{url}} on the command line.
+If the @var{file} is an external one, the document will be automatically
+treated as @samp{html} if the Content-Type matches @samp{text/html}.
+Furthermore, the @var{file}'s location will be implicitly used as base
+href if none was specified.
+
@cindex force html
@item -F
@itemx --force-html