A different type of ^ notation is sometimes used with computer
s. Here the ^ means control
, as in the control key
. Thus ^D
is a control-D, ^H
is a control-H, etc.
Yet another ^ notation is used in the context of mathematics in computer programming languages.
Here, the ^ stands for simple exponentiation, i.e.,
2^8 is used to write 28 or 256. Some languages use ** instead of ^. This notation is sometimes used for writing exponents in other contexts where superscripts are not possible, such as in node titles.