You should see a grid with perfectly straight black lines. If not, please consider installing some MathML fonts. √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ ⏜ ⏜ ⏜ ⏜ ⏜ ⏜ ⏜ ⏜ ⏜ ⏜ ⏜ ⏜ ⏜ ⏜ ⏜ ⏜