12 Key

How do I get the F 1-10 keys on my Mac OSX to perform the shortcuts they're supposed to in every program?

The F10-12 keys adjust the volume only.. how can I get them to perform functions like displaying the multiple screens open, show desktop, etc?? My old Mac did that... but now the F keys seem virtually useless! I mean how often do I really need to adjust screen brightness?! Please help me restore the beauty of the F keys!!!

The system has a way to change the "F1-10" keys ("function keys") but not to change the other keys. System Preferences > Keyboard (or "Keyboard & Mouse"). Select the tab "Keyboard Shortcuts". Follow the instructions for changing a shortcut.

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Aria Harmonica AH 1020 Set W C 12 Full Set Blues Harp 12 Key ARIA JAPAN
Aria Harmonica AH 1020 Set W C 12 Full Set Blues Harp 12 Key ARIA JAPAN
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NEW HOHNER CX 12 CHROMATIC HARMONICA KEY OF C 12 HOLE 48 REED BLACK 7545 48 CX12
NEW HOHNER CX 12 CHROMATIC HARMONICA KEY OF C 12 HOLE 48 REED BLACK 7545 48 CX12
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Swan SW24 12 24 Holes Double Sided Key C G Harmonica
Swan SW24 12 24 Holes Double Sided Key C G Harmonica
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Swan Premium Harmonica 12 Hole Key of C 48 Tone Chromatic Harmonica Mouth Organ
Swan Premium Harmonica 12 Hole Key of C 48 Tone Chromatic Harmonica Mouth Organ
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Hurricane Harps Hot House Blues Harmonica Set 12 Keys with Deluxe Zippered Case
Hurricane Harps Hot House Blues Harmonica Set 12 Keys with Deluxe Zippered Case
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Professional Chromatic Harmonica C Key 12 Holes 48 Tones with Case
Professional Chromatic Harmonica C Key 12 Holes 48 Tones with Case
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NEW HOHNER CX12 CHROMATIC HARMONICA KEY OF C 12 HOLE 48 REED BLACK 7545 48
NEW HOHNER CX12 CHROMATIC HARMONICA KEY OF C 12 HOLE 48 REED BLACK 7545 48
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BRAND NEW HOHNER CHROMETTA 12 255 48 KEY OF C HARMONICA BLUES FOLK HARP
BRAND NEW HOHNER CHROMETTA 12 255 48 KEY OF C HARMONICA BLUES FOLK HARP
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Larry Adler 12 Hohner Harmonica in all keys box included Used
Larry Adler 12 Hohner Harmonica in all keys box included Used
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HOHNER MARINE BAND 364 24 12 HOLE DIATONIC HARMONICA KEY OF G + BONUS MINI 38 C
HOHNER MARINE BAND 364 24 12 HOLE DIATONIC HARMONICA KEY OF G + BONUS MINI 38 C
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HOHNER 7534 48 LARRY ADLER PROFESSIONAL12 CHROMATIC HARMONICA IN THE KEY OF C
HOHNER 7534 48 LARRY ADLER PROFESSIONAL12 CHROMATIC HARMONICA IN THE KEY OF C
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Vintage Hohner Chrometta 12 Harmonica Key of C Made in Germany RARE
Vintage Hohner Chrometta 12 Harmonica Key of C Made in Germany RARE
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Harmo Angel 12 Chromatic Harmonica Harmonica in all keys box included Free S
Harmo Angel 12 Chromatic Harmonica Harmonica in all keys box included Free S
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SYairi harmonica Key F  SYH 20 NEW Free Shipping From JAPAN
SYairi harmonica Key F SYH 20 NEW Free Shipping From JAPAN
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HOHNER 255 48 CHROMETTA 12 CHROMATIC HARMONICA IN THE KEY OF C
HOHNER 255 48 CHROMETTA 12 CHROMATIC HARMONICA IN THE KEY OF C
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Vintage HOHNER Super Chromonica KEY OF C 12 Hole Original Case Harmonica
Vintage HOHNER Super Chromonica KEY OF C 12 Hole Original Case Harmonica
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Hohner CX12 Jazz refurbished Harmonica in all keys box included Free Shipping
Hohner CX12 Jazz refurbished Harmonica in all keys box included Free Shipping
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Seydel SOLIST PRO 12 STEEL Low Octave harmonica key Low C
Seydel SOLIST PRO 12 STEEL Low Octave harmonica key Low C
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Suzuki Folkmaster Harmonica Set 12 Keys  Case Authorized Dealer FREE PRIORITY
Suzuki Folkmaster Harmonica Set 12 Keys Case Authorized Dealer FREE PRIORITY
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Hohner 48 Jubilee Chromonica Harmonica C Key Gold 12Holes Limited Edition of 200
Hohner 48 Jubilee Chromonica Harmonica C Key Gold 12Holes Limited Edition of 200
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Deluxe Key of C Blues Swan Chromatic Harmonica with 12 hole 48 tone
Deluxe Key of C Blues Swan Chromatic Harmonica with 12 hole 48 tone
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Hohner CX12 Jazz Harmonica in all keys box included Free Shipping in the US
Hohner CX12 Jazz Harmonica in all keys box included Free Shipping in the US
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KaineZ 12 Holes 48 Tones C Key Chromatic Harmonica for Beginners KZ1248
KaineZ 12 Holes 48 Tones C Key Chromatic Harmonica for Beginners KZ1248
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Suzuki SCX48 Chromatix Series Harmonica Key of C 12 Hole Chromatic
Suzuki SCX48 Chromatix Series Harmonica Key of C 12 Hole Chromatic
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Suzuki Harmonica SCX 48 Chromatix Series 12 Hole Key of F
Suzuki Harmonica SCX 48 Chromatix Series 12 Hole Key of F
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HOHNER 7545 CX 12 BLACK CHROMATIC HARMONICA KEY OF C HARP NEW
HOHNER 7545 CX 12 BLACK CHROMATIC HARMONICA KEY OF C HARP NEW
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KaineZ 12 Holes 48 Tones C Key Chromatic Harmonica for Beginners KZ1248
KaineZ 12 Holes 48 Tones C Key Chromatic Harmonica for Beginners KZ1248
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New Swan Harmonica 24 Holes Key of CG Double Sided SILVER Tremolo Mouth Organ
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Hohner CX 12 Black Key of E
Hohner CX 12 Black Key of E
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Hohner M2013BX G Rocket Harmonica Boxed Key of G
Hohner M2013BX G Rocket Harmonica Boxed Key of G
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EASTTOP blues harps T008K 12 music set pack12keys mouth organ in one case
EASTTOP blues harps T008K 12 music set pack12keys mouth organ in one case
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Swan Harmonica Key of C 12 hole 48 tone Chromatic Carry Case Mouth Organ SW1248
Swan Harmonica Key of C 12 hole 48 tone Chromatic Carry Case Mouth Organ SW1248
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