A preview for Invoice / quote format

There should be a preview image for selected Invoice or quote format.
that would not be used daily, but its easy to select format for newbies like me.

[size=10]Last Update: 10.06.2015[/size]

Which format do you mean? The PDF file?

yes, PDF file format, if it shows on side of selection dropdown menu, it will be good.

doesnt mean i am ordering you to do, its just a request , BTW, you are doing very good work by supporting peoples like me to handle my business so effectively.