Hi,
I'm having problems with those two words. And I don't mean allow in the sense of to allow someone to do something.
For instance, touch-screen devices allow navigation via touch input.
or
Touch-screen devices allow for navigation via touch input.
What if I add another word, say precise:
Touch-screen devices allow precise navigation via touch input.
Touch-screen devices allow for precise navigation via touch input.
What's the difference? And when does one have to use the "for" preposition?
Paul