That's because if there were any, the menus would wrap the Earth seven times. Seriously, though: To reflect such things visually, menus are typically used, and

That's because if there were any, the menus would wrap the Earth seven times. Seriously, though: To reflect such things visually, menus are typically used, and they bring limitations: they take up space (clutter), it's not always clear where the best places are for items (hierarchies are often ambiguous), deep menu trees mean you need several clicks to do things, etc. Textual interfaces have different trade-offs. They're less discoverable, for one thing, but they're also much easier to script, use rapidly (once you know them), etc. These trade-offs aren't always suitable, but for something that becomes a central part of your toolchain (like a calculator or text editor), it's often a net gain.