AlgebraicNumberTrace[a] gives the trace of the algebraic number a.
ArrayDepth[expr] gives the depth to which expr is a full array, with all the parts at a particular level being lists of the same length, or is a SparseArray object.
CellSize is an option for cells that specifies the width and height of an inline cell.
FileNameSplit["filename"] splits a file name into a list of parts.
Front
(Built-in Mathematica Symbol) Front is a symbol that represents the front of a graphic for purposes of placement and alignment.
GeodesicErosion[marker, mask] gives the fixed point of the geodesic erosion of the image marker constrained by the image mask.
GroupActionBase is an option to specify a base for a group.
GroupGenerators[group] returns a list of generators of group.
IntegerQ[expr] gives True if expr is an integer, and False otherwise.
LibraryFunctionInformation[fun] returns information about a LibraryFunction.