On Wed, 4 Feb 2015, paul g wrote:

> Thank you for your 'FAST' and 'Efficient' response.


Paul, putting things in 'quote marks' when no quotemarks are required is 
used to signify irony. That is, it is used to denote that you mean the 
OPPOSITE of what you are saying.

I realise you are trying to use them for emphasis, but what you're doing 
there makes as much sense as putting a question mark at the end of the 
sentence - it does not produce what you want.

In the sentence you wrote, and underline would've been the appropriate 
method of emphasis, but even if you used that it would still look 
confusing since no emphasis is actually required in that sentence.