The package provides four commands for vertically scaling and stretching objects. Its primary function is the ability to scale/stretch and shift one object to conform to the size of a specified second object. This feature can be useful in both equations and schematic diagrams.

Additionally, the scaling and stretching commands offer constraints on maximum width and/or minimum aspect ratio, which are often used to preserve legibility or for the sake of general appearance.

The author is Steven B. Segletes.