$GeoLocation (Built-in Mathematica Symbol)

$GeoLocation is a settable global variable that specifies the default geodetic location to use.

SplineDegree (Built-in Mathematica Symbol)

SplineDegree is an option for spline functions and graphics primitives that specifies the degree of polynomial basis to use.

Core Language (Mathematica Guide)

The uniquely powerful symbolic language that is the foundation for Mathematica.

Data Manipulation (Mathematica Guide)

Importing & Exporting >, Arrays >, Numerical Data >, Statistics >, Image Processing >, Signal Processing >, Text Processing >, Binary Data >, Files >, Databases >, Date & ...

Dynamic Interactivity (Mathematica Guide)

Capabilities that define a new kind of dynamic interactive computing.

Notebooks and Documents (Mathematica Guide)

Program-constructible symbolic documents with uniquely flexible formatting.

Systems Interfaces & Deployment (Mathematica Guide)

Unique customizability and connectivity powered by symbolic programming.

Visualization and Graphics (Mathematica Guide)

Symbolic graphics and unparalleled function and data visualization

Evaluation > Debugger (Mathematica Menu Item)

Debugger opens the control palette for the debugger.

CapitalDifferentialD (Built-in Mathematica Symbol)

CapitalDifferentialD[x] displays as \[CapitalDifferentialD]x.