HP 54710A User's Reference Manual page 179

Math Menu
The math menu allows you to define either one or two functions.
Each function consists of a math operator and either one or two
operands. A function is calculated on data adjusted by the calibration
factors, and a new waveform (called a function) is generated by the
computation. You can place markers on functions, make
measurements on functions, or store functions to waveform memories.
Figure 12-1
Waveform math menu and menu map
12–2