Glossary

Command Prompt

Operating systems provide a way to enter commands from the keyboard one line at a time. In most cases this amounts to opening a terminal window, but in Microsoft Windows it is the command prompt. You can 'open' the command prompt by clicking on the Start menu and typing 'cmd'.

Font

A specific size and style of type.

Tuple

A tuple is an ordered list of (usually more than three) things. That's all. A tuple of one thing is a singleton. A tuple of two things is an ordered pair. A tuple of three things is a triplet. A tuple of four things is a ... tuple. Get it?