From KDE UserBase Wiki

    WML Filter

    WML (Wireless Mark-up Language) is the mark-up language used to deliver content to mobile devices. WML is like a mobile version of HTML.

    KWord can read from and save to WML format files and already understand most WML tags.

    There is no support for WBMP (Wireless Bitmap), which is the monochrome image format used as inline image inside WML documents.