Which documentation resource contains a list of allowed and discouraged overrides for domain definit

Which documentation resource contains a list of allowed and discouraged overrides for domain definitions?

A. Modeling Reference Guide.

B. Server Developer’s Guide.
C. Web Client Reference Guide.
D. Development Compliancy Guide.

Reference: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=2ahUKEwiT8LiF6oTnAhUpyIUKHUkfD_IQFjAAegQIARAC&url=ftp%3A%2F%2Fpublic.dhe.ibm.com%2Fsoftware%2Fsolutions%2Fcuram%2F6.0.4.0%2Fen%2FDevelopers%2FCuramServerModellingGuide.pdf&usg=AOvVaw3zCdfyWq3-9sTeq24TBILM