To start a new pathway key project, select the new key option, via the toolbar (first icon) or via the File…New menu option. The sub menu allows the selection of either key type.
A key type selector dialog will be presented, if the toolbar new key option or keyboard shortcut is used.
![](https://help.lucidcentral.org/lucid/wp-content/uploads/2021/07/key_create_key_type_selector_dialog-300x207.jpg)
Select the ‘Pathway Key’ option to proceed. The Builder will then modify its interface ready for pathway key construction.