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Possible Duplicate:
Difference between “does have” and “has”
“did shoot” vs “shot”
'Did see' and 'Saw'
“I understand you” vs “I do understand you”
What is the difference in meaning between “I play” and “I do play”?

Is there any specific scenario where the "Environment does matter" used ? Actually, its a tagline of a product.

Guys any ideas?