# Welcome to arithmepad
- This is a Markdown cell
- Cells can contain JavaScript or Markdown content
- Use `Esc` to exit, `Enter` to start cell editing
- `Arrow Up`, `Arrow Down` to navigate cells
- `m` to convert a cell to Markdown, `y` to convert a cell to code
- `l` to toggle line numbers
- `d`, `d` to delete a cell
// this is a JavaScript code cell
let f = x => 1.23 + Math.log(4.56 * x);
let x = [0.1, 0.2, 0.5, 1, 2, 3, 4];
new Chartist.Line(plotId, {labels: x, series: [x.map(f)]});
x.map(f)