general.tax.pricesinctax - this
determines whether the prices for items you enter in the back end
are inclusive of tax or not. In the US, prices would typically be
entered exclusive of tax, and this setting would be 'n'. In Europe,
it is more common that prices would be inclusive of tax (though
business-to-business oriented sites may use ex-tax
pricing).
frontend.users.access - this provides control over the level of access to the site that the public has.
'No' = full site viewable 'Yes' = must login to view site 'Partial' = prices & add buttons hidden until login 'Browse' = full site viewable, must login to checkout
frontend.display.images.large.linktype
- this determines whether large views of images are launched in a
new browser window [n] or within an ajax popup [a]. The latter is
generally preferred these days as it's virtually instant and also
avoids some of the issues with popup blockers that may interfer with
launching new windows depending on browser
settings.