You can transfer files by itunes, open directly from an email or a web page.
You can hide the left bar and even the upper bar tool, to change the slide just prees the button next or slide your finger to the left for the nex or to the rigth for the previos, slide down to show the bar tool and slide up to hide it and have full screen for your presentation.
There is an inbox folder inside the file list, in this folder you can see a copy of all the files opened from the web or from an email, and you can transfer it to your computer by Itunes.
There is a button @ to send by email the current presentation
When you have a presentation is important to mark some parts, in the past by a laser, now you can draw over the slide, with colors just with your finger, you can clean it and paint it as much as you need.
this app is perfect to leave the laptop and use the ipad on presentations