FindMinValue[f, x] gives the value at a local minimum of f.FindMinValue[f, {x, x_0}] gives the value at a local minimum of f, found by a search starting from the point x = ...
First
(Built-in Mathematica Symbol) First[expr] gives the first element in expr.
FrameBox[box] is a low-level box construct which represents box with a frame drawn around it.
GroupPageBreakWithin is an option for Cell that specifies whether a page break should be allowed within the group of cells if the notebook that contains the group is printed.
Head
(Built-in Mathematica Symbol) Head[expr] gives the head of expr.
HoldAll
(Built-in Mathematica Symbol) HoldAll is an attribute which specifies that all arguments to a function are to be maintained in an unevaluated form.
ImageResolution is an option for Export, Rasterize, and related functions that specifies at what resolution bitmap images should be rendered.
ImageSizeAction is an option for Pane and related constructs that specifies what to do if the specified ImageSize setting does not match the size of the contents.
Infix
(Built-in Mathematica Symbol) Infix[f[e_1, e_2, ...]] prints with f[e_1, e_2, ...] given in default infix form: e_1~f~e_2~f~e_3 .... Infix[expr, h] prints with arguments separated by h: e_1 h e_2 h e_3 ...
InString[n] is a global object that is assigned to be the text of the n\[Null]^th input line.