Add Correct/Tick Icon in EPub or HTML Files

Unicodes for Adding Correct/Tick Icons (✓ or ✔) in HTML is as follows:

✓ (HTML decimal: ✓) correct/tick icon.

✔ (HTML decimal: ✔) bold version of previous icon.

2 more usable unicodes for Tick Icon:

☐ (HTML decimal: ☐) an empty/unchecked checkbox.

☑ (HTML decimal: ☑) the checked version of the previous checkbox.

**Please Note**
Sometimes it doesnt work with Arial, Helvetica or sans-serif fonts