There was at least one popular home computer which was never just text mode but booted in permanent bitmapped graphic mode, directly in BASIC line editor. Enter

There was at least one popular home computer which was never just text mode but booted in permanent bitmapped graphic mode, directly in BASIC line editor. Entering a command would execute immediately, entering it with the line number in front would add that line to the program. So right after boot a single command could draw a line or a circle. One was not supposed to even type the letters for any command, but had to enter it like on the pocket calculators: the commands were written on the keyboard, in more colors, so just looking at the keyboard one directly saw all the available commands. The barrier there was learning to enter the needed mode to reach the appropriate color and learning the syntax and the meaning of the commands. Every user learned to enter at least one command and its syntax: the one which allowed loading any program from the tape. It was a full command with the empty string parameter meaning "match any name": LOAD ""