Typematic
Provided by the ASK Keyboard Dictionary
Aka/also known as: typamatic
If a keyboard is said to be typematic, it's capable of repeating a key at the keyboard's controller level for the duration a user holds down a given key. Effectively all modern PC keyboards are typematic, thus this capability is no longer apart of keyboard/computer advertising. But for older keyboards such as those for terminals, not all were typematic and the ones that were may have a selective layout where only specific keys were typematic.