It's the white bolt of lightning on a blue background. If you aren't signed into Messenger, type in your phone number, tap Continue, and enter your password. It's the person-shaped icon in the top right corner of the screen. This should be at the top of the page. It's on the top left side of the screen. They just need to open Messenger, open their profile page, and tap the image at the top of the screen to do so. You can also scan an image of a code (e.g., one online) if you like. It should fit inside of the circle on the Scan Code page. After a brief moment, your friend's information will pop up on your screen. If your friend isn't a contact on Messenger, this option will add them to your contacts. If your friend is already a contact of yours in Messenger, scanning their QR code will open a conversation with them.
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One-sentence summary -- Open the Messenger app. Tap the profile button. Tap your profile image. Tap the Scan Code tab. Have a friend open their profile image. Center the profile image in your Messenger screen. Tap Add on Messenger.

Q: These should be purely factual observations, with no component of judgment or evaluation. People often disagree about evaluations because they value things differently, but directly observable facts provide a common ground for communication. For example,   "It's 2:00 a.m. and I hear your stereo playing" states an observed fact, while "It's way too late to be making such an awful racket" makes an evaluation. "I just looked in the refrigerator and saw that there's no food, and I'm thinking that you didn't go grocery shopping" states an observed fact (with an inference explicitly stated), while "You wasted the whole day" makes an evaluation. Or, guess what the other person is feeling, and ask. Naming the emotion, without moral judgment, enables you to connect in a spirit of mutual respect and cooperation.  Perform this step with the aim of accurately identifying the feeling that you or the other person are experiencing in that moment, not with the aim of shaming them for their feeling or otherwise trying to prevent them from feeling as they do. Feelings are sometimes hard to put into words.  For example, "There's half an hour to go before the show starts, and I see that you're pacing (observation). Are you nervous?" "I see your dog running around without a leash and barking (observation). I'm scared." that feeling. Or, guess the need that caused the feeling in the other person, and ask. When our needs are met, we have happy, pleasant feelings; when they are not met, we have unpleasant feelings.  By tuning into the feeling, you can often find the underlying need. Stating the need, without morally judging it, gives you both clarity about what is alive in you or the other person in that moment.   For example, "I see you looking away while I'm talking, and you've been speaking so quietly, I can't hear you (observation). Please speak up so I can understand.  "I'm feeling uncomfortable (feeling) because I'm needing connection right now. Is now a good time to hang out?" "I saw that your name wasn't mentioned in the acknowledgments.  Are you feeling resentful because you're not getting the appreciation you need?" Note that "needs" have a special meaning in NVC: they are common to all people and not tied to any particular circumstance or strategy for fulfilling them. So, wanting to go to a movie with someone is not a need and a desire to spend time with a specific person is not a need. The need in that case might be companionship. You can meet your need for companionship in many ways, not just with that specific person and not just by going to a movie. Ask clearly and specifically for what you want right now, rather than hinting or stating only what you don't want. For the request to really be a request—and not a demand—allow the other person to say no or propose an alternative. You take responsibility for getting your own needs met, and you let them take responsibility for theirs.  "I notice that you haven't spoken in the last ten minutes (observation).  Are you feeling bored? (feeling)" If the answer is yes, you might bring up your own feeling and propose an action: "Well, I'm bored, too.  Hey, how would you like to go to the Exploratorium?" or perhaps, "I'm finding these people really interesting to talk with.  How about we meet up in an hour when I'm done here?"
A: State the observations that are leading you to feel the need to say something. State the feeling that the observation is triggering in you.  that is the cause of that feeling. Make a concrete request for action to meet the need just identified.

Article: Most outdoor speaker systems run off an existing indoor receiver. Since the receiver is a sensitive piece of electronics, you almost always want to set the receiver up indoors. A multi-zone receiver allows you to have music playing outside while something else plays inside. Make sure that it is in a sheltered location. You will be running the speaker wire from the receiver to the volume control box, and then from the volume control box to the associated speakers. Most volume control boxes can be easily mounted on an outdoor wall. Consider multiple volume control boxes for multiple pairs of speakers. This will allow you to control the volume across multiple zones. Each pair you add increases the chance of overloading the receiver's built-in amplifier. You can install the amplifier right next to the receiver and then run the speaker wire out of the amplifier. 16-gauge is fine for less than 80 feet (24 m), but longer wires should be 14- or 12-gauge. If you don't use the right gauge for your speakers, your audio quality will suffer. The longer the wire, the more degradation will occur.  Four-conductor wire allows you to connect two pairs of speakers with one wire, potentially saving you the hassle of running a lot of wire. For outdoor speakers, CL2 and CL3 speaker wire complies with US in-wall standards, which means it can be safely ran through walls without causing issues with other electronics or posing a fire risk. This wire can also withstand elements, which is essential for an outdoor setup. Add an additional 10-15% to the length for snags and slack. You don't want your speaker wire to be pulled tight, as crimps in the wire can affect sound quality. Drill a hole low in the wall to run the speaker wire from the inside to the outside. Make sure to seal the hole with silicone to maintain your house's insulation. Run the speaker wire to the volume control box, and then run a second wire from the box to the speakers.  Don’t run speakers through windows or door jambs. This can cause your speaker wire to get crimped, causing audio issues. Some modern speaker setups are completely wireless, and operate using Bluetooth. If you are using a setup like this, you don't have to worry too much about wiring. You just need to ensure that your receiver supports Bluetooth speakers, and that the speakers are setup relatively close to the receiver. Bluetooth can reach about 150 feet (45.7 m) if there is nothing impeding the signal. Walls between the receiver and speaker will shorten the effective range.
Question: What is a summary of what this article is about?
Set up the receiver indoors. Install a volume control box outside. Install a multi-channel amplifier if you are running multiple pairs of speakers. Obtain enough speaker wire. Run your speaker wire from the receiver to the outside area.

Article: Stand about four feet back from the end of the board if you're a teen or adult, or further if you take large steps. Stand in an upright position with your back and legs straight. Swing your arms together in the same direction as you walk. Now hop to the end of the board. As you do this, keep your head and neck straight and looking forward. Push off the board with both feet as hard as you can. Bring your arms up and squeeze your ears with your arms. While you do this, remember to keep your legs straight and toes pointed.
Question: What is a summary of what this article is about?
Stand on the diving board. Take three long steps. Bring one leg up. Do a large arm circle counter-clockwise. Go all the way up and then bend at the waist. Clasp your hands together and look at your hands.