Click the green flag, then choose the speed you want the text to scroll by dragging the slider that says delay. The smaller the delay is, the faster the text will scroll. Then enter some text, and the text will start scrolling left on the screen. When the text scrolls pass, it will appear at the right and continue scrolling left.
These are the supported characters. If you enter a character that isn't in this list, it won't work. · The numbers 0 ~ 9 · "+" · "-" · "×" · "÷" · "*" · "/" · "(" · ")" · "[" · "]" · "{" · "}" · "_" · "=" · "≑" · "√" · "%" · "<" · ">" · "@" · "$" · "≤" · "≥" · Capital and lowercase letters A ~ Z · "." · "?" · "!" · ":" · "," · Double quote · Single quote · ";" · Subscript numbers ₀ ~ ₉ ( ₀,₁,₂,₃,₄,₅,₆,₇,₈,₉ ) · Superscript numbers ⁰ ~ ⁹ ( ⁰,¹,²,³,⁴,⁵,⁶,⁷,⁸,⁹ ) · Space