Hi! I've been trying to make grohtml produce <sub> and <sup> html tags from an ms input without much success. From my current understanding, the grohtml device driver should detect both a vertical position change and a font size change from the device independent file (as it is described in the start_superscript/start_subscript function in the post-html.cpp file), that would cause the driver to emmit the <sub> or <sup> tag. When I try to force this behaviour with \v and \s calls in my ms file, I get the expected behaviour if I set the output device to ps, but when I set it to html I only get a <small> tag generated by the device driver. I also noticed that the "V" instructions, in the device independent file (using -Thtml and -Z options with groff) get removed by (probably, I think, the html preprocessor), only remaining the s instruction.
Best regards Daniel