---
title: Command reference
description: Every command of the 12 calculators saturnus runs, with its stack effect, what it does and examples with their results from the emulated calculator.
section: commands
---

Every command of the 12 calculators, with its stack effect, what it does and examples with their results from the emulated calculator. Search by name or by what a command does; `->LIST` finds `→LIST`, `SIGMA+` finds `Σ+`. Or browse a model's commands by menu.

## Reading an example

An example shows the stack before, the command, and the stack after, as the emulated calculator displayed them. On the 42S, 27S, 17BII, 17B, 19BII, 38G, 39G and 40G a function is pressed, not typed: their examples show the display before, the keys, and the display after.

Each command has its own address, for a link: [HMS- on the 48GX](commands.md#48gx/hms-). The model pills in an entry lead to the same command on the other models. In the app, Search finds the same commands and runs them on the calculator.

## Sources

- [HP-17B Owner's Manual](https://literature.hpcalc.org/community/hp17b-om-en.pdf)
- [HP 17BII Financial Calculator Owner's Manual](https://literature.hpcalc.org/community/hp17bii-om-en.pdf)
- [HP 19BII Business Consultant II Owner's Manual](https://literature.hpcalc.org/community/hp19bii-om-en.pdf)
- [HP-27S Owner's Manual](https://literature.hpcalc.org/community/hp27s-om-en.pdf)
- [HP-28S Reference Manual](https://literature.hpcalc.org/community/hp28s-rm-en.pdf)
- [HP 38G Graphing Calculator User's Guide](https://literature.hpcalc.org/official/hp38g-ug-en.pdf)
- [HP 39G/40G Graphing Calculator User's Guide](https://literature.hpcalc.org/official/hp39g40g-ug-en.pdf)
- [HP-42S Owner's Manual](https://literature.hpcalc.org/community/hp42s-om-en.pdf)
- [HP 48G Series Advanced User's Reference Manual](https://literature.hpcalc.org/community/hp48g-aur-en.pdf)
- [HP 48G Series User's Guide](https://literature.hpcalc.org/community/hp48g-ug-en.pdf)
- [HP 48SX Owner's Manual](https://literature.hpcalc.org/community/hp48sx-om-en.pdf)
- [HP 49G Advanced User's Guide](https://literature.hpcalc.org/official/hp49g-aug-en.pdf)