Turtle and Observer Command
    case variable

    [
    anything1 [list of commands 1]
    anything2 [list of commands 2]
    ]
Checks if the first argument `variable` is equal to any of the `anythings` in the list. If it is equal, the corresponding `[list of commands]` is executed and control skips to the end of the `case` statement. A case statement can often be used in place of nested ifelse statements. If nothing matches, no `[lists of commands]` are executed and control skips to the end of the `case` statement. You can use `true` as one of your `anythings` as a default case. Note: the first input can be an expression as well as a variable. Examples: `case temperature [ "cold" [show "boy, it's cold!"] "warm" [show "mmmm. nice."] "hot" [show "wow, it's hot!"] ]` Related commands: if ifelse