Instead of opening the PowerPoint presentation file and then clicking F5 or using other ways to start the presentation, you can save your PowerPoint file in the PowerPoint Show format. Also, this format prevents changes in the presentation.

By default, the PowerPoint spelling checker checks the spelling in all text elements in the presentation: slides, outlines, note pages, and handout pages. Like other Microsoft applications such as Word and Excel, PowerPoint underlines all words that it cannot find in its dictionary and might be misspelled with a red wavy underline.

The Header and Footer blocks usually display duplicating information, such as the presentation or event title, the company logo, name, slide number, etc. The Header shows the information at the top, and the Footer shows the information at the bottom of each slide.

Suppose your presentation contains sensitive or confidential data, or you might want only certain people to be able to open and modify a presentation. In that case, you can encrypt the file and protect it with a password. Generally, to ensure that no one can change the presentation, it is better to save the presentation as images or as a PDF file.

If you transfer or share a presentation file with custom fonts to another computer or even a tablet and plan to demonstrate it there, you cannot be sure that the other device has all the fonts installed on your PC or laptop. To display the presentation correctly on every possible device, you should embed the fonts into your presentation to make the required fonts available on other PCs, laptops, tablets, etc.

You may need to create a slide with random text for some reason. For example, to demonstrate some features, to create templates, etc. PowerPoint has two hidden formulas to generate text.

Iterative processes are the core of any business, and Microsoft PowerPoint provides several templates for cyclic processes: basic cycle, text cycle, block cycle, etc. Cyclic diagrams provide an easy way to illustrate a circular flow of money and goods of the buy, product, and sell process; or steps of iterative decision making of the marketing process.

When you create a presentation for a graduate thesis or dissertation, often, you need to insert Greek letters into the slide. Mathematical symbols and Greek letters are pervasive today and used everywhere, from physics to social science. You may use the equation block for inserting those symbols, but this block will have different format settings than the rest of your text, and you will not be able to edit it in older versions of Microsoft Office.

After recent updates, the ribbon in Microsoft PowerPoint can take up to 1/3 of the available screen space. Microsoft Office help tells that you can hide or unhide your ribbon, but you cannot reduce the size of your ribbon or the size of the text or the icons. False! You can change the mode, remove unnecessary white space around buttons, and, thus, reduce the ribbon size.

When you prepare your presentation, you should adapt it to the device used for projecting it. Some devices or even laptops can have different sizes, so you can need to change the sizes of your presentation.