This is a very simple program to convert complex numbers from (X,Y) or X+Yi format to absolute-argument format. The program is written in Spanish but in the archive there are instructions in English. Very useful for students.
EditorRapìdo is an editor to create documents including text, matrix, equations, grobs, etc. It is the perfect complement for VisorRapido. Full documentation in package. Messes with your configuration settings.