The timeline is the bar at the bottom that contains all audio and video clips in your project. The playhead is the grey line that appears in the timeline. It's in the menu bar at the top of the screen. This will split the audio file into two separate audio files where the playhead is at.

Summary: Place cursor over a audio wave in the timeline. Click to place the playhead. Click the Modify tab. Click Split Clip.

. On many web pages, advertisements take up a large fraction of the load time. Install Adblock Plus or another ad-blocking add-on to prevent these ads from loading. Many web hosts rely on ads for most of their revenue. Consider disabling ad block on sites you'd like to support. . Click the menu icon (three horizontal bars), then the help icon (?), then Restart with add-ons disabled. If Firefox runs much faster in Safe Mode, a faulty add-on is slowing you down. Enter about:addons in the address bar, or click the menu icon (three horizontal bars) and select Add-ons. Disable one add-on at a time, and browse for a while to see if it speeds you up. Visit the same page to remove the add-on permanently or re-enable it, depending on your test. If you have a custom theme, it could be slowing down your browser. Visit the Appearance tab on the add-ons page, and switch to the default theme. If you've just closed a bunch of tabs, Firefox might lag for a while until it deletes the contents of those tabs from its memory. Get rid of them right away by visiting about:memory and clicking Minimize memory usage. The cache is another feature that speeds up browsing in general, but can slow you down if it gets too full for your hard drive. To adjust the cache size, visit about:preferences#advanced, click the Network tab, and check "Override cache management." Increase the cache if you have a fast drive with plenty of space, and reduce it to about 250MB if you have a slow or mostly full hard drive. Clearing your cache every couple months is a good idea, or whenever your browser gets unusually slow. You should also clear the cache before reducing its size. . If you are experiencing major slowdowns on a broadband connection, you might have to reset Firefox to remove a buggy add-on or setting change. This will delete all your add-ons, themes, and download history, and return your settings to default. Visit about:support and click Refresh Firefox, or see this article for more detailed instructions.

Summary: Install an ad blocker Start Firefox in safe mode Disable add-ons. Switch to the default theme. Minimize memory usage. Adjust cache. Reset Firefox

The necessary controls for this mission will be as follows: Throttle - A black knob - When pushed forward, the engine is at full throttle and when pulled full back, the engine is idling. Fuel Mixture - A red knob - Pushed full inward is the richest mixture (used for sea level takeoffs and landings), while full back is engine off. Only pull the red knob full out when you are on the ground and ready to shut down the engine. Carburetor Heat - Used to warm the engine air intake in icing conditions and on long descents with engine at idle - conditions where a cold engine with cold air could cause icing. Note that, for all practical purposes, this has to be either full-on or full-off. Flaps - A flat handled switch to select the wing flap positions. This will be used for slowing the aircraft to a safe speed in preparation for landing the aircraft. Note that the flaps should be advanced notch-by-notch, one position (10) at a time. Fuel tank select - A Cessna 172 would almost always be set on "Both Tanks." Steering wheel (Yoke) - This sets the attitude (climb and turn) and the speed of the aircraft. Use small pitch adjustments, in and out for pitch (to climb or descend). Turn the yoke left and right to bank the aircraft. Engine RPM is used for setting engine speed (power) for climbing, descending, and/or landing. Rudder Pedals - These are operated by your feet. Press the top edge of the pedals and the brakes are applied. (Of course, this only has an effect when you are on the ground.) Pressing the lower part of the pedals allows steering while on the runway and helps do quality turns in the air. You will also use the lower part of the rudder pedals to stay lined up with the runway while on final approach. Control trim - There are two trim wheels in the panel which, when adjusted properly, give you almost hands-off control. You will not be using these in an emergency. Be aware too, if you do try to use them to trim for landing, you may not have enough pitch control to gain altitude quickly in case of a go-around. You would have to re-trim in case of a go-around, but it is way better to just stay away from these controls and consider them off limits. The six instruments will be located in the following order: Top left - The "Airspeed Indicator" shows aircraft airspeed, usually in knots. (A knot is one nautical mile per hourabout 1.15 MPH or 1.85km/hr). Top center - The "Artificial Horizon" shows the aircraft attitude, that is, how the plane is inclined in all directionswhether the plane is climbing or descending and how it is banking - left or right. Top right - The "Altimeter" shows the height (altitude) of the aircraft, in feet MSLfeet above mean, or average, sea level. Lower left - The "Turn and Bank Indicator" is a dual instrument which tells how fast you are changing the compass heading (rate of turn) and also whether you are in co-ordinated flight, feeling the proper (down-in-the-seat) Gs from the turn. This is also called the "Turn and Slip Indicator" or "Needle Ball." Lower center is the "Heading Indicator" which shows the current compass heading. Keep in mind that small amounts of friction in the heading gyro dictate that this instrument be calibrated on an ongoing basis. This is explained below in the calibration procedure. Lower right is the "Vertical Speed Indicator" which tells how fast you are going higher or lower. It gives the rate of descent (or climb) in feet per minute. Zero means that you are maintaining altitude and are neither climbing nor descending.

Summary: Study the the aircraft controls. Familiarize yourself with the six pack.

Walk around the park or your neighborhood at a moderate to fast pace. Walk after work, during your lunch break, or in the morning after you eat breakfast. Walking your dog is another great way to fulfill your 20 to 30 minutes of daily walking. If you do not have time to walk every day, trying biking or running 3 days out of the week for 45 minutes. Bike or run around your neighborhood or the park at a moderate to fast pace. For the best results, maintain a heart rate of 20 to 30 bpm while biking and running. Before or after you walk or bike, do 1 to 2 sets of push ups, planks, and sit ups. Start with a low number of repetitions if you haven't been doing strengthening exercises regularly. As you become stronger, increase the repetitions. For example, do 2 sets of 5 push ups during the first 2 weeks. After 2 weeks, increase your push ups to 8 or 10 push ups.
Summary: Walk for 20 to 30 minutes every day. Bike or run for 45 minutes every other day. Incorporate strengthening exercises into your workout routine twice a week.