## Automatic conversion step parameters

If the first conversion step is a Convert step, the following parameters are automatically added by `w2x` (unless, of course, they have already been specified by the user):

- If `out_file` extension starts with “`htm`” or “`shtm`”,

  `-p step_name.charset UTF-8`

  The charset parameter allows to get Web browsers consider the generated document as being HTML, and not XHTML.

- `-pu step_name.xhtml-file out_file_with_an_xhtml_extension`

If the last conversion step is a Save step, Transform step, Split step, Web Help step or EPUB step the following parameters are automatically added by `w2x` (unless, of course, they have already been specified by the user):

- `-pu step_name.out-file out_file`