To cut out a section of your recording you first seek to where you want to start your cut. Then click the "Tools" menu button above the timeline and select the Cut tool or you can just press the "C" key start the tool. Select the section to cut by dragging the red bar along the timeline or if you click on the start or end of the span then you can use the arrow keys to go back and forth. You can also click around the timeline then use the "S" key to jump the start to that point or the "E" key to jump the end to your current seek point. If you want to Preview what the cut will look like then you can press the Preview button which will seek right before the cut and start playing then jump over the selected section and stop shortly after it. Once you're ready to commit you press the OK button or the Enter key Anytime you make a change to the recording it is automatically saved on your computer. After the cut is added a dashed red line will show where the cut happened on the timeline. If you want to later undo the cut you can seek back to that spot on the timeline then click this icon which will bring up a menu with another icon you can press to remove the cut. Or you can also use the undo or edit history drop down to go back in time before you added the edit. The last used tool will be listed next to the Tools button above the timeline so you can easily use the same tool again by clicking on it here.