Holdkey lets you enter characters from the Windows extended set (not shown on the keyboard) by pressing and holding a key–much as with the virtual keyboards found on mobile devices.

The other difference is that the font size in the Character Map is much smaller, so you can see more of the extended character set in a single view. Advertisement. Article continues below this ad.

A font that uses the extended ASCII characters as defined by IBM for the original PC. The OEM or DOS/OEM character set contains line draw and other symbols commonly used by earlier DOS programs to ...

Computers set up with the English language only use the characters standard to the English language. Unicode lets you use extended characters, such as carriage return and tabs and characters used ...