BASIC (Beginner's All-purpose Symbolic Instruction Code) is a high level language with simple syntax that makes it easy to write simple programs.
This includes hardware initialization, memory management, interrupt processing, etc.
Variable names in Color BASIC have the first two characters significant.
Numeric variables have only one type, a binary floating point implementation.
In the case of an array, the element address is enclosed with a parenthesis: Multiple dimensions are separated by commas Color BASIC provides several operators for both mathematic and, to a lesser extent, string operations.
This can be a fixed number, a variable, or other operation or function that returns a numeric quantity.
If you make a mistake typing in a line, you can either retype it from scratch (or DEL it).. or you can EDIT it.
When in EDIT mode, you get a reprint of the line, and a second copy that you SPACEbar across chars.