RecordSeparators is an option for Read, Find, and related functions that specifies the list of strings to be taken as delimiters for records.

RenameDirectory["dir_1", "dir_2"] renames the directory dir_1 to dir_2.

ScriptSizeMultipliers is an option for Style that specifies how much smaller to render each successive level of subscripts, etc.

SolveAlways[eqns, vars] gives the values of parameters that make the equations eqns valid for all values of the variables vars.

StringQ[expr] gives True if expr is a string, and False otherwise.

Mathematica has a general mechanism for handling messages generated during computations. Many built-in Mathematica functions use this mechanism to produce error and warning ...

JavaBlock -- release any Java objects created during evaluation once evaluation finishes, BeginJavaBlock, EndJavaBlock -- mark the beginning and end of a Java block, ...

LoadedJavaClasses[] returns a list of the classes currently loaded into Java by Mathematica.

ImageLevels[image] gives a list of pixel values and counts for each channel in image. ImageLevels[image, n] bins pixel values into n equally spaced levels.ImageLevels[image, ...

DegreeCentrality[g] gives a list of vertex degrees for the vertices in the underlying simple graph of g. DegreeCentrality[g, "InDegree"] gives a list of vertex ...