Gmail has introduced a new feature - now you can open PowerPoint attachments as slideshows right within your browser, without having to download anything.
To open a Microsoft PowerPoint (PPT) file without downloading it to your computer:

Open the message containing an attachment.
Click View as slideshow at the bottom of the message.

This will open your slides in [...]

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Here are a few Powerpoint tricks that can either save your time or make your work easy.
Opening the Slideshow in a separate window:
Sometimes when you’ve started a slide-show in full-screen and realise that it needs some tweaking, you have to stop the show, change the slide, start the show again, and then look for another [...]

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