TINA includes text and equation editors for annotating schematics, diagrams and graphics output. Using these tools you can design professional reports and documents. Teachers and students will also find this an invaluable aid in solving problems and preparing examples. Another powerful feature of TINA is its interpreter. Using the text editor, you can enter arbitrary functions and solve systems of linear equations or evaluate integrals. The interpreter can also process and then draw previous results and reference circuit parameters.