Whatever caused him to ask in all caps, I bet he's confused now and still seeking an answer. Poor guy! The typed word is indeed a way of giving "voice" to thoughts, ideas, etc. It's tough to convey inflection in the written voice, and shouting is a way of calling attention. Perhaps he was afraid of being ignored and felt he had to raise his voice.
And, why in the hell am I wasting my time being an apologist for him and certain members of the forum.
Imagine trolling for a simple answer and being treated so shabbily.