A vector instruction that validates the VC is called a masked operation.
validates Neumann of the University of Trier has written a validating XML parser in Standard ML: here.
Sources validate a fact and using them validates your work.
The NARM certification process validates skills, knowledge, and experience.
Complimenting her on the earrings, however, validates the time she spent trying to accessorize well - and many women will appreciate that you took the time to observe and really see them.