Dear sage-support I made a html version of Sage quick refcards at http://user.mendelu.cz/marik/sage/quick/quick.html for my students. You may find it interesting also for you or your students. Some cleaning is still necessary and will be done perhaps within few days, but it is usable right now. If you want to customize this page for you (number theory and graph theory is commented out), download *.tex, *.png, tes4ht.usr, marik- jsmath.4ht from http://user.mendelu.cz/marik/sage/quick/ and compile by the following command htlatex quick "xhtml,jsmath,marikjsmath" " -cmozhtf" Thanks to all authors of PDF refcards for making the sources of refcards available Robert Marik