x /= c divides x by c and returns the new value of x.
EditCellTagsSettings -> {opt_1 -> val_1, opt_2 -> val_2} is a global option that specifies settings for the Edit Cell Tags dialog box.
EnterExpressionPacket[expr] is a MathLink packet that requests the evaluation of expr.
EvaluatePacket[expr] is a MathLink packet requesting evaluation of expr.
ExpandAll[expr] expands out all products and integer powers in any part of expr. ExpandAll[expr, patt] avoids expanding parts of expr that do not contain terms matching the ...
ExpandFileName["name"] textually expands name to have the form of an absolute file name for your operating system.
FactorialPower[x, n] gives the factorial power x (n). FactorialPower[x, n, h] gives the step-h factorial power x (n, h).
FileExistsQ["name"] gives True if the file with the specified name exists, and gives False otherwise.
FileNameDepth["file"] gives the number of path elements in the file name " file".
FindArgMin[f, x] gives the position x_min of a local minimum of f.FindArgMin[f, {x, x_0}] gives the position x_min of a local minimum of f, found by a search starting from ...