How to Fix a MacBook Spacebar (9 Steps)

Take the 'C', 'M' and 'Command' keys off the keyboard. Place your fingernail under the key and carefully lift it up until it unclips itself. Removing these keys will give you more space to remove the space bar and clean.
Press the lower half of the space bar firmly. The upper half will be higher than the other keys on the keyboard.
Press the upper side of the space bar firmly. The lower half will then be higher than the other keys. The change in height will cause the metal bars to unhook themselves from the space bar, and coincidentally unclip the two metal tabs. You may need to do this more than once to get each piece unclipped; you will hear a distinctive click.
Press the left side of the space bar until you hear a click. This means the left white clip is undone.
Press the right side of the space bar until you hear a click. Then press the center of the space bar until you hear a click. At this point, all the clips and hooks will be undone.
Pull the space bar away from the keyboard carefully.
Use a cotton swab or cleaning wipe to clean the now-exposed area of the keyboard. Wipe the space bar key clean as well, since sticky substances and crumbs can get stuck to it.
Place the space bar back on the keyboard in the correct location and click it in place.
Replace the 'C', 'M' and 'Command' keys.
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How to Create an Electronic Signature on a Mac

Launch the Mail application. It is usually located on you Dock menu. If you don't see it there, click on ''Finder'' and locate it under the list of applications in the ''Applications'' folder.
Click on ''Preferences'' under the ''Mail'' menu on the upper-left corner. A window will open displaying a series of tabs on the top section, including ''General,' ''Accounts,' ''RSS,' ''Junk Mail,' ''Composing,' ''Signatures'' and more.
Click on the ''Signatures'' tab. You will see three columns in this section. The first column shows you the list of email accounts you use with Mail. The second column shows the lists of signatures that correspond to each account. The third column displays the content of each electronic signature for you to edit at any time.
Click on the ''+'' (add) sign under the second column to add a new electronic signature. The signature's default name is ''Signature #1.' Change the title if you wish.
Write the content you desire for your electronic signature on the provided space in the third column.
Click and drag ''Signature #1'' from the second column to the email account you wish to assign it to.
Follow the same procedure to create more electronic signatures. (Signature #2, Signature #3, etc) You may assign the same electronic signature to multiple accounts with the click-and-drag process. You may also assign multiple signatures to one account, although only one will display at a time.
To assign different electronic signatures for one email account, select the account for this action. Select the order in which you wish these to appear by clicking on the ''Choose Signature'' drop-down menu and choosing from: ''In Sequential Order,' ''At Random,' ''Signature #1,' ''Signature #2'' or ''None''
To remove an electronic signature from one of your accounts, simply select the email account you wish to edit. Click on the electronic signature you wish to remove from this account and then click the ''–'' (minus) sign.
Click on the ''Composing'' tab from the ''Preferences'' menu. Under the ''Addressing'' middle section, locate the ''Send new mail from'' drop-down menu. Select the email account you wish to use to compose a new mail from this drop-down menu. The electronic signatures corresponding to each account will display accordingly.
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How to Stream UDP on VLC (6 Steps)

Open VLC and select 'Media' and then 'Streaming' from the menu.
Find your media file by using the 'File,' 'Disc' or 'Network' tabs, depending on the location of the file. Click on the 'Stream' button after the file has been chosen. Select 'Next' after confirming that the correct source has been chosen.
Choose 'UDP (legacy)' from the drop-down menu and click 'Add.'
Type the IP address of the computer that will receive the network stream and click 'Stream.'
Open VLC on the computer that will receive the UDP stream and click 'Media' and 'Open Network Stream' on the menu.
Type 'udp://@' in the box and click 'Play.'
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