Version 4.12 It is recommanded to compile with options --mathjax --jmol --geogebra and to check in manager tools the installation of other software. Parts of the modifications since version 4.10. (see Changelog or the svn log). Work on technical variables in class. Many changes in the navigation (ariane thread, reorganisation of menus). Add register variables (configurated by the administrator, for class group and class). Geogebra is now in html5, improve geogebra anstype. Add canvasdraw help. Change the default for the sheet formula : it is now the indicator I1. Indicates variable priorities to maxima and pari. Use the html5 audio balise for mp3. Add option wims_scoreexam_withoutip for exam scores without IP checking. Can generate automatically the sheet associated to a public document when it is inserted in a class. New jobs in adm/raw (see the help). MathML fontsize synchronised with HTML. Add symbols for the activities for participants and the corresponding legend.. Colored square for exercises in home page are now clickable. Add chemistry openclass and immunology openclass. Work on public document: add reading code for them (documents not in classes or modules). Add duration of the student exam, it is possible to download in a spreadsheet details of exams. Possibility to duplicate very easily an open class or a class which accepts (with password). Add openbabel and gnu utilities in the software checkup. Add graphics interpretation of student activities.