If you're just going to answer "google it" then why bother having the forum?
I didn't say "google it" I said "L M G I F Y". Lots of times the poor slob who asks a question never gets to read the truth, owing to the fact that many contributors like to hear themselves talk, but never say anything remotely substantive, or in some cases, even remotely correct.
I believe in good old-fashioned Yankee self-sufficiency, and that includes making oneself aware of answers, so that a truly helpful dialog will then ensue. Google has leveled the playing field and allows even the person with no research material at hand to get the answer, then think about it, hit a few related links, and really get an education. In the old days, it would take from a week to "never," to find the answers that we can get now in seconds. When was the last time anyone here picked up a Webster's or a Hagstrom's?
Believe it or not, there is a large segment of our population (I have corresponded with many of them personally) who do not initially think of Google when they wonder about something. Using Google is a benign addiction that pleases my thirst for knowledge. I highly recommend it, before just asking the man on the street how street cars work.
How about someone FIRST obtaining the "generic" information from Google, and THEN coming here for more detailed/technical information from us forum members? Is that really asking too much?
HotWater has the answer. I could have googled it myself, then copy & pasted the info, and pretended that I knew the answer. Since the question intrigued me personally, I googled it. Then I presented the findings. Now we know the answer. Now we will hear from all the experts who disagree.
Sitting back, munching on the popcorn, I remain,
Cordially yours for the New Year,