ExtractRGB extracts the RGB values from an ANSI escape sequence.

IsANSIEscape checks if the given rune slice contains an ANSI escape sequence on the given index.

IsANSIReset checks if the given rune slice contains an ANSI reset sequence on the given index.

ReadANSISequence reads an ANSI escape sequence from the given rune slice and returns the sequence and the end index.

Text opens a full screen text editor in console mode and returns the entered string.

RGB is a RGB color representation.