Dell Inspiron 15 (3521, Late 2012) - Manual (Page 17)

Specifications
Views
Battery
System
Information
Memory
Ports and
Connectors
Dimensions and
Weight
Computer
Environment
Storage
Touchpad Power Adapter Camera
Communications Video Audio
Display
Media-card
reader
Keyboard
Keyboard
Type Chiclet keyboard
Shortcut keys Some keys on your keyboard have two symbols on them. These keys can be
used to type alternate characters or to perform secondary functions. To type
the alternate character, press Shift and the desired key. To perform secondary
functions, press Fn and the desired key.
NOTE: You can define the primary behavior of the shortcut keys by changing
Function Key Behavior in System Setup.