NCache
(Built-in Mathematica Symbol) NCache[x, xn] represents a numeric cache object for a quantity with exact value x and approximate numerical value xn.
NullWords is an option for Read and related functions which specifies whether null words should be taken to exist between repeated word separators.
Opener
(Built-in Mathematica Symbol) Opener[x] represents an opener with setting x, displayed as OpenerBox[True] when x is True and OpenerBox[False] when x is False. Opener[Dynamic[x]] takes the setting to be ...
PaletteNotebook[{cell_1, cell_2, ...}] represents a palette notebook that can be manipulated by the Mathematica front end.
PasteBoxFormInlineCells is an option for cells that specifies whether a new inline cell is created when a typeset expression is pasted into a non-box-type cell.
PixelConstrained is an option for ArrayPlot which specifies how to constrain cells to align with displayed pixels.
ProgressIndicator[x] represents a progress indicator with setting x in the range 0 to 1. ProgressIndicator[Dynamic[x]] takes the setting to be the dynamically updated current ...
RadicalBoxOptions -> {opt_1 -> val_1, opt_2 -> val_2, ...} is an option for selections that specifies settings for RadicalBox objects.
Record
(Built-in Mathematica Symbol) Record represents a record in Read, Find, and related functions.
RowMinHeight is an option for the low-level function GridBox that specifies the minimum total height in units of font size that should be allowed for each row.