GridFrame is an option for grids that specifies whether a surrounding frame is drawn.
InsertResults is an option for NotebookEvaluate that determines whether to place the results of evaluation in the notebook being evaluated
LineBreakWithin is an option for selections that specifies whether line breaks occur automatically when the end of a line is reached.
LineIndentMaxFraction is an option for Cell, StyleBox, and Style that specifies the maximum fraction of the total page width to indent at the beginnings of lines.
LinkProtocol is an option to LinkLaunch, Install, and related functions that specifies the underlying data transport protocol to use for a new MathLink link.
LocalizeVariables is an option to Manipulate that determines whether the values of variables associated with controls should be localized.
LocatorRegion is an option for Locator that specifies where the locator object should by default be allowed to go when it is dragged.
MatchLocalNames is an option for Trace and related functions that specifies whether symbols such as x should match symbols with local names of the form x$nnn.
Medium
(Built-in Mathematica Symbol) Medium is a style or option setting that specifies that objects should be medium sized.
NotebooksMenu is a global option that specifies which recently opened notebooks are listed under the File menu.