With help of the buttons <i>Save</i> and <i>Restore</i> at the bottom of the main form your input data can be stored and restored at any time during your session.<br> 
You can, however, restore data only during an active session. When leaving Weblab or after pressing <i>Restart</i>, all input data are lost and Weblab will start with default values. If you wish to keep input data beyond your active session, set the <i>keep data</i> option in your preferences. This instructs Weblab to always come up with the data of your last successful run.