DefaultBaseStyle is a low-level option for formatting and related constructs that specifies a default base style to use before BaseStyle.
DockedCells is an option for notebooks that gives a list of cells that are to be displayed "docked" at the top of the notebook.
EditCellTagsSettings -> {opt_1 -> val_1, opt_2 -> val_2} is a global option that specifies settings for the Edit Cell Tags dialog box.
Evaluatable is an option for Cell that specifies whether a cell should be used as input to be evaluated by the Mathematica kernel.
EvaluatePacket[expr] is a MathLink packet requesting evaluation of expr.
ExcludedForms is an option for FullSimplify which can be set to a list of patterns for expressions that should not be touched if they are encountered at intermediate steps in ...
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 ...
FileFormat["name"] attempts to determine what Import format could be used to import the file corresponding to " name".
FormBox
(Built-in Mathematica Symbol) FormBox[boxes, form] is a low-level box construct which displays as boxes but specifies that rules associated with form should be used to interpret boxes on input.
GapPenalty is an option for SequenceAlignment and related functions that gives the additional cost associated with each gap corresponding to a run of insertions or deletions.