FourierParameters is an option to Fourier and related functions that specifies the conventions to use in computing Fourier transforms.
FrameBox[box] is a low-level box construct which represents box with a frame drawn around it.
Get
(Built-in Mathematica Symbol) << name reads in a file, evaluating each expression in it, and returning the last one.
Gradient is an option for FindMinimum and related functions that specifies the gradient vector to assume for the function being extremized.
GraphPower[g, n] gives the graph-n\[Null]^th power of the graph g.
HankelH1[n, z] gives the Hankel function of the first kind H_n^(1)(z).
HarmonicMeanFilter[image, r] filters image by replacing every value by the harmonic mean of the values in its range r neighborhood. HarmonicMeanFilter[data, r] applies ...
ImageValue[image, {x, y}] gives the pixel value of image at position {x, y}.ImageValue[image, {x, y}, " type"] gives the pixel value converted to the specified type.
Inpaint
(Built-in Mathematica Symbol) Inpaint[image, region] retouches parts of image that correspond to nonzero elements in region.
InverseFunctions is an option for Solve and related functions that specifies whether inverse functions should be used.