ImageDeconvolve[image, ker] gives a deconvolution of image using kernel ker.
Scale
(Numerical Calculus Package Symbol) Scale is an option to NLimit and ND that specifies the scale at which variations are expected.
FieldHintStyle is an option for InputField that specifies the style to use for displaying the field hint.
ViewAngle is an option for Graphics3D and related functions which gives the opening half-angle for a simulated camera used to view the three-dimensional scene.
ViewCenter is an option for Graphics3D and related functions which gives the scaled coordinates of the point which should appear at the center of the final image.
$Assumptions is the default setting for the Assumptions option used in such functions as Simplify, Refine, and Integrate.
If you have installed Mathematica in a location where multiple users can run it (for example, on a file server or multi-user machine), then you can set up systemwide defaults ...
Mathematica includes comprehensive support for XML, the meta-markup language developed by the World Wide Web Consortium (W3C) for describing structured documents and data. ...
a ** b ** c is a general associative, but non-commutative, form of multiplication.
Pi
(Built-in Mathematica Symbol) Pi is \[Pi], with numerical value \[TildeEqual] 3.14159.