I'm having trouble finding documentation to the Tsai-Wu Damage model. I have seen example input files that run just fine but not really a guide how to set up this failure model for progressive damage. In particular I do not understand the following statement in the input decks:

*DEPVAR, DELETE=variable number

Is there an overview to the state variable numbers controlling the element deletion flag?
For Tsai-Wu I have seen sample decks with DELETE=1 and for a differnt one with PLY FABRIC damage initiation I have seen DELETE=16. How do I know, which criterion does require what number?

Abaqus ​​​​​​​