IRIS Toolbox Reference Manual

## &

Reference to the steady-state level of a variable

#### Syntax

    &Variable_Name
    $Variable_Name

#### Description

Use either a `&` or `$` sign in front of a variable name to create a reference to that variable's steady-state level in transition or measurement equations. The two signs, `&` and `$`, are interchangeable.

The steady-state reference will be replaced

- with the variable itself at the time model's steady state is being calculated, i.e. when calling the function `sstate`;

- with the actually assigned steady-state value at the time the model is being solved, i.e. when calling the function 'solve''.

#### Example

    x = rho*x{-1} + (1-rho)*&x + epsilon_x !! x = 1;

IRIS Toolbox. Copyright © 2007—2013 Jaromir Benes.