The status list is only relevant for "State Machine" workflows.
The status list is a SharePoint list that contains a record for each workflow step.
The status code is central. It is also used in the workflow configuration and it uniquely identifies a status.
In addition, a description of the workflow step can be provided.
The status list is linked to the SharePoint list on which the workflow operates.
The SharePoint list on which the workflow operates has a lookup column that points to the status list.
Multiple workflows can share a status list.
There are command line commands for kenaflow.exe to create, hide and display the status list and to add it to the SharePoint list where the workflow is working.
See program switches: