Notes: HTML frameset tag and HTML frame tag: we use frameset tag to divide browser window into different frames. Description. Nested framesets. BoxAdcontent.document.write("<\/script>"); Framesets can be nested to any level. Below are the steps for switching to outer frame and printing the text on outer frames: Step 1) A frameset tag is the collection of frames in the browser window. Our Nested Frames gobo from our Rosco range. A nested data frame is a data frame where one (or more) columns is a list of data frames. /* The HTML