Uptime Magazine is viewed on the web using the Nxtbook viewer. The Nxtbook viewer allows you to zoom, switch page views, print, and much more.  Here's a brief explaination of the various options you have

Toolbar 1 (located at the top left of the Nxtbook viewer)

Zoom - Zoom in/out and adjust zoom level from 70-400%

Magnify - Open the adjustible magnifier to drag across the page.

Navigation - Turn the page forward or back and adjust page effects.

Toolbar 2  (located at the top right of the Nxtbook viewer)

Page-View - Switch the Nxtbook page mode

Save - Save this Nxtbook offline

Search - Search the Nxtbook for specific content

Help - Click for further help

Full Screen - Launch/exit fullscreen mode

Toolbar 3 (located on the middle/right side of the Nxtbook viewer)

Bookmarks - Create/manage bookmarks for the Nxtbook

E-Mail - Send a link of this nxtbook to a friend

Print - Print some or all of the Nxtbook

Notes - Create/manage notes for this nxtbook

Link - Share this link via Facebook, Twitter, etc

Toolbar 4 (located at the bottom of the Nxtbook viewer)

Subscribe - Subscription information for the Nxtbook

Contents - Interactive table of contents

Pages - Dynamic thumbnails of this nxtbook

Archives - Displays other Uptime Magazine issues

We hope that this short tutorial will help you to better enjoy Uptime Magazine on the web!