Symbols can also be trained here. The more unusual symbols are not deļ¬ned in base LATEX NFSS and require usepackageamssymb 1 Greek and Hebrew letters. Make sure that your symbols do not overlap and that they are written in one part.
The second one is used to write expressions that are not part of a text or paragraph and are therefore put on separate lines.
You will find plenty of FOSS stuff for these and I dont think it would be too hard to integrate. List of LaTeX mathematical symbols. Draw a mathematical expression on the canvas below. Just draw the symbol you are looking for into the square area above and look what happens.