Educational Institution: MGTU named after Bauman N.E., Moscow. Project description: The fragment "Master of graphics annotation" allows the T-FLEX CAD user to quickly and easily annotate the graph constructed in Cartesian coordinate system. By using the "Master of graphics annotation", it is possible to significantly speed up the process of annotating the graphs. The user can just place the fragment on the drawing field, modify required parameters of the fragment and graph annotation will be completed at that. The fragment has a capability to independently put the axis tick labels (intermediate values of a certain variable), operate with various number formats (standard, exponential, proper and improper fractions). The fact that graph annotation is implemented in the form of a fragment allows the user to work with the graph without changing its annotation (using filters) and, also, work with graphs having hidden its annotation with a single command.