Composer cannot edit HTML framesets, or pages with inline frames. For framesets, try editing the page for each frame separately. For pages with iframes, save a copy of the page and remove the <iframe> tag.
Composer kan nie HTML-raamstelle of bladsye met inlynrame redigeer nie. Vir raamstelle, probeer elke raam apart redigeer. Vir inlynrame, stoor 'n afskrif van die bladsy en verwyder die <iframe>-merker.