This effect, my mother explained, was the result of two techniques, called "backlighting"and flash fill. " (From an ACT English test passage)
Am I right to think that it'd be better if I rewrite this sentence into "... two techniques called 'backlighting' and 'flash fill. ' " to make it kind of a restrictive relative clause decorating "techniques"? Instead of like the original sentence which uses a kind of a non-restrictive relative clause elaborating the whole sentence preceding it.