Chart Gridlines
Gridlines are the lines that span wide and tall within the chart's Plot Area. These Horizontal and Vertical gridlines originate from the axes, which makes the data easier to comprehend for the viewer. Gridlines may emerge from both the horizontal and vertical axes, although by default you can see only Horizontal gridlines on the chart.

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Apply Pattern Fills to Plot Area of Charts
Patterns in PowerPoint are two-color designs comprising lines, dots, dashes and checks. PowerPoint includes 48 patterns such patterns with names like Plaid, Weaves, Shingle, and Zig Zag. When used with some caution, Patterns can make a great fill for your Plot Area, same like any other fill. In this tutorial, let us learn how to apply a Pattern fill to the chart's Plot Area in PowerPoint 2013.

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More Gridline Options for Charts
You might have noticed that by default, PowerPoint 2013 only shows Horizontal Major Gridlines on a chart. Yes, you can enable Vertical Gridlines too as we explored in our Chart Gridlines in PowerPoint 2013 for Windows tutorial, and more importantly you can format these Gridlines to appear exactly as you want them to show.

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Record Slide Show
Unlike rehearsing slides, recording a slide show is not something that's a practice session. Rather, recording slides is almost like delivering a presentation that you cannot deliver in person! Does that sound confusing? Let's imagine that you cannot deliver your slides in person. You then want to do the next best option, that is to deliver your presentation in front of your computer, almost as if you had a live audience present. All this while, all your narrations are being recorded. Even the time you spend on each slide is recorded along with the time taken for each animation to play. You can also record your laser pointer activity if you use PowerPoint's built in laser pointer. All of this can be saved as part of your presentation that you can send to others - and they can see this at their convenience, with your voice accompanying the slide show!

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Tick Marks on Chart Axes
When you look at charts on a PowerPoint slide from afar, you make out the value of a series by exploring where exactly it's placed vis-Ã -vis the axis. Of course, if your chart has data labels that identify values, then this is less of an issue. So what is the solution to this problem? Tick Marks placed on the axes will help us get a better idea.

Add, Edit, or Delete Comments
If you are the member of a group that is working on a presentation, or if you are getting your presentation designed by someone else, then you will need to give feedback, without actually editing the slides themselves. Comments are great for such scenarios -- a comment is a note that you can attach to any slide object or to a whole slide. The ability to add comments into your PowerPoint presentation enables you to write important notes for particular slide object or for the slide. Once you add a comment in PowerPoint 2011, you can edit the comment and even delete the comment, as explained in the following steps.