c_sub subtraction from C a = c_sub(b,c) b first input argument c second input argument a output argument Do a subtraction. Add here a paragraph of the function description LaTeX can also be used to render equation: In this case, the rendering should $x-y$ It is now possible to include an image in using Scilab code (this requires to declare the namespace xmlns:scilab="http://www.scilab.org"): plot3d(); ]]> plot3d(); If an image contains a localized string then the attribute scilab:localized="true" is required: plot2d(); xtitle("My Beautiful 2D plots"); ]]> plot2d(); xtitle("My Beautiful 2D plots"); c_sub(3,4) c_sum