Software represented in the book contains a number of useful and effective receptions of the procedural and functional programming in the Mathematica system that extend the system software and allow sometimes much more efficiently and easily to program the software for various purposes, above all, wearing system character. Among them there are means which are of interest from the point of view of including of their or their analogs in standard tools of the Mathematica system, at the same time they use approaches, useful in programming of applications. The above software rather essentially dilates the Mathematica functionality and can be useful enough for programming of many problems above all of system character. At the same time, it must be kept in mind that the classification of the represented means by their appointment in a certain measure has a rather conditional character because these tools can be crossed substantially among themselves by the functionality. The freeware package MathToolBox containing the above means is attached to the present book (https://downloads.zdnet.com/product/2053-78703951/).