From OpenSCADAWiki
Parameters
| Identifier | Parameter | Type | Mode | Hidden | Default |
|---|---|---|---|---|---|
| out | Output | Real | Return | false | 0 |
| in | Input | Real | Input | false | 0 |
| t_lg | Lag time, seconds | Real | Input | false | 10 |
| f_frq | Calculation frequency, Hz | Real | Input | true | 100 |