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==Extras and Fun Stuff==
===Zoom-In For More Detail===
Sometimes it helps to zoom in on an event or respiratory pattern so you can learn more of what is going on, or provide a close-up view for posting on the forum. The easiest way to zoom in on an event is to simply left-click on the event until the desired zoom level is reached. You can then use the left and right cursor to move forward or back in the time-line. You can also select a time period of events or flow-rate by left-clicking on the graph and holding down the mouse button while selecting. Right-clicking can un-zoom. On laptops with a touchpad or touch-screen, you may be able to zoom in and out by "pinching" the zoom in and out as you do with any page zoom.
===Add a Dotted Zero-Line===
When analyzing the Flow Rate graph, it helps to add a Dotted Line at the zero flow. Zero-flow marks the change from inhale to exhale and exhale to inhale. Everything in the flow graph that is above the zero-line is positive flow, or an inhale (inspiration), and every thing below the line is negative flow or an exhale (expiration). To learn more about analyzing your Sleepyhead chart and flow rates, see [[Beginner's Guide to SleepyHead|The Beginner's Guide to Sleepyhead]]
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