### 2.8.1 Suppressing output

The nodisp command is used to evaluate an expression and suppress the output.

- nodisp takes expr, an expression.
- nodisp(expr) evaluates expr but displays Done in place of the result.

An alternate way of suppressing the output is to end the input with the :; symbol.

#### Example

nodisp(a:=2+2)

Done |  |  |  |  |  |  |  |  |  |

and a will be set to 4.

b:=3+3:;

Done |  |  |  |  |  |  |  |  |  |

and b will be set to 6.