\[Sum]
(Mathematica Character Name) Unicode: 2211. Alias: Esc sum Esc. Compound operator with built-in evaluation rules. ∑_(i)^i_max(f) is by default interpreted as Sum[f,{i,i_max}]. ∑_(i=i_min)^i_max(f)f is by ...
Unicode: 00D7. Alias: Esc * Esc. Infix operator with built-in evaluation rules. x × y is by default interpreted as Times[x,y], which is equivalent to x y or x*y. Not the same ...
Unicode: 22C3. Alias: Esc un Esc. Infix operator with built-in evaluation rules. x ⋃ y is by default interpreted as Union[x,y]. The character ⋃ is sometimes called 'cup'. Not ...
BlockRandom[expr] evaluates expr with all pseudorandom generators localized, so that uses of SeedRandom, RandomInteger, and related functions within the evaluation of expr do ...
ButtonData is an option for the low-level function ButtonBox that specifies the second argument to give to the ButtonFunction for the button when the button is active and is ...
CForm
(Built-in Mathematica Symbol) CForm[expr] prints as a C language version of expr.
DefaultElement is an option for Grid and related constructs which specifies what to insert when a new element is interactively created.
EvaluationElements is an option for NotebookEvaluate that determines which cells to evaluate.
Expression is a symbol that represents an ordinary Mathematica expression in Read and related functions.
MessagePacket[symbol, string] is a MathLink packet containing a Mathematica message identifier of the form symbol::string.