Abstract. Methods and algorithms have been developed that have made it possible to significantly expand the functionality and scope of the new universal information software technology being created. All of them are implemented in 32 software modules and are designed for the most efficient construction of isomorphic analogs of the undirected mixed-forest graphs of arbitrary structure and simultaneous removal of selectively chosen sets of nodes and branches from them. To work effectively on objects containing up to 65,536 nodes, which can be placed on 6400 virtual X-levels of the monitor screen, the technology requires only 4 bytes of information for each node, taking into account its number, which is a natural number from the interval [0; 65535]. A method has been developed and implemented that allows adapting the technology to work with objects with up to 4⋅10¹⁹ nodes that it can recognize.

Keywords: graph tree, undirected tree, sapling, mixed forest, set of software tools.