ImageSubtract[image, x] subtracts a constant amount x from each channel value in image.ImageSubtract[image_1, image_2] gives an image in which each pixel is obtained by ...
IntegerString[n] gives a string consisting of the decimal digits in the integer n. IntegerString[n, b] gives a string consisting of the base b digits in the integer n. ...
LaplacianFilter[image, r] convolves image with a range r Laplacian kernel.LaplacianFilter[image, {r_1, r_2}] uses ranges r_i in the vertical and horizontal ...
MaxFilter[image, r] filters image by replacing every value by the maximum in its range r neighborhood. MaxFilter[data, r] applies max filtering to an array of data.
NumberMarks is an option for InputForm and related functions that specifies whether ` marks should be included in the printed forms of approximate numbers.
Prepend
(Built-in Mathematica Symbol) Prepend[expr, elem] gives expr with elem prepended.
RadicalBox[x, n] is a low-level box construct that represents the displayed object Power[x, (n)^-1] in notebook expressions.
Rationals represents the domain of rational numbers, as in x \[Element] Rationals.
RiemannR[x] gives the Riemann prime counting function R(x).
SetFileDate["file"] sets the modification and access dates for a file to be the current date.