Install packages in your system that provide the following executable files: latex dvips convert mimetex.cgi Navigate to Settings > Site administration > Plugins > Filters > Manage filters Change the setting for the Algebra notation filter to On Change the setting for the TeX notation filter to On Click on the Settings link for the TeX notation filter Enter the path for the latex , dvips and convert binaries that you install in step #1 (leave mimetex empty for now) Switch the convert output format setting to PNG Create a test Moodle course Edit the summary information for a section in your test course, switch to the Edit HTML source mode and enter the following information: <p></p> <p><span style="font-size: large;"><strong>Dragmath</strong> -- @@0/-2@@</span></p> <p><span style="font-size: large;"><strong>Tex</strong> -- $$\frac{0}{-2}$$</span></p> After saving the changes you should see a missing image or an error message beside the Dragmath text and an image showing a 0 / -2 fraction beside the Tex text Edit the TeX filter settings and specify the path to the mimetex binary that was installed in step #1 Purge the caches on your site Navigate back to the test course created in step #8 You should see an the fraction 0 / -2 image rendered beside both bits of text in your edited section summary Test 2: compare how filter_tex settings page looks in 2.5 and 2.6 using RTL language and make sure all texts and values are aligned correctly.