i Register
In some senses, tabulator is marked as historical. Watch for register when choosing this word.
noun
A person who counts or tabulates things.
The mechanism on a typewriter that sets the position of columns and borders.
A tab character.
You can put a tabulator in all those places where a space is allowed. A tabulator character corresponds to, for example, 4 spaces in the program editor.
An early data processing machine that produces printed lists and totals from data on punched cards.