Visitor Visa - B2

Hi,
My parents attended interview last week at Chennai at 9:30 am.
The interview went well. Translator was Kannada but his service was not used as the interview was simple. The interviewer(Male) was kind enough to ask my dad few general questions and was pleased to grant them visa.
He asked:
1. What is your name? Where does your son work?
2. Occupation?
(My dad is a Business owner selling grocery)
3. What do you sell?
( Foodgrains, cosmetics, oil, etc..)
4. What type of oils ?
( Coconut, Peanut...etc)
He then asked some selling price of those oils...just to see how confidently they answer. My dad answered well as he know them easily! That's it...Visa was granted. None of the documents were seen anywhere!

We got the visa after 2 days and we are pleased to see 10 yrs multiple!!

My advise to others:
1. Go thru this site. Prepare a document mapping questions and answers which your parents should know and to expect.
2. Go thru them everyweek with your parents. Dont ask them questions just before they leave. They may get confused and may forget in fear!
3. Make them feel it is easy. Never tell them any bad experiences.
4. What I did was collected some Success experiences from this forum, pasted it in a word document and sent to them. Reading other people experiences made them more confident. Say out of 30 success add 2-3 failures which will make them understand why others didnt get. Dont add failures such as "They didnt see anything...just rejected"
This may give them negative feel.
5. Let them understand what is D156 and its contents and other documents. This is what the interviewer looks at.
6. Tell them to add some english words in between say for ex: Numbers instead of local language numbers.

Finally, Luck too plays a lot and blessings from God!!

Thanks to immihelp.
Wish everyone best of luck!

Regards,
PK