Appearance is an option for displayed objects such as Button and Slider that specifies the general type of appearance they should have.
BoundaryStyle is an option for plotting functions that specifies the style in which boundaries of regions should be drawn.
BoxRatios is an option for Graphics3D that gives the ratios of side lengths for the bounding box of the three-dimensional picture.
BubbleSizes is an option to BubbleChart and related functions that specifies the range of sizes used for bubbles.
CellLabelAutoDelete is an option for Cell which specifies whether a label for the cell should be automatically deleted if the contents of the cell are modified or the ...
ChampernowneNumber[b] gives the base-b Champernowne number C_b.ChampernowneNumber[] gives the base-10 Champernowne number.
CharacterEncoding is an option for input and output functions which specifies what raw character encoding should be used.
ColorRules is an option for ArrayPlot which specifies how colors of cells should be determined from values.
ColorSeparate[image] gives a list of single-channel images corresponding to each of the color channels in image.ColorSeparate[image, colorspace] gives a list of images ...
Csch
(Built-in Mathematica Symbol) Csch[z] gives the hyperbolic cosecant of z.