TeXstudio : user manual
Finally, there are also hidden options, which can only be changed by modifying the inifile: Tools/Kind/LaTeX, Tools/Kind/Rerunnable, Tools/Kind/Pdf, Tools/Kind/Stdout, Tools/Kind/Viewer, which give a list of commands that are treated as latex compiler ( show the log afterwards), rerunnable (repeat command call, if there are warnings), pdf generators ( pdflatex), .