The img type of WikiPictures is easy to implement, as it's just HTML, but more sophisticated types, in which the picture is defined inline, will require TwicI to generate images and then emit HTML linking to them (or something). This would be possible but probably slow to do on the fly; it might be better to render it at page update, although this is against the spirit of the current implementation; some sort of cache based on page name and kept fresh by comparing last-modified times might make render-on-view fast enough. CategoryWiki CategoryGeekery