GraphicsGrid[{{g_11, g_12, ...}, ...}] generates a graphic in which the g_ij are laid out in a two-dimensional grid.
GridCreationSettings -> {opt_1 -> val_1, opt_2 -> val_2, ...} is a global option that specifies settings for the Create Table/Matrix dialog.
ImageResolution is an option for Export, Rasterize, and related functions that specifies at what resolution bitmap images should be rendered.
Last
(Built-in Mathematica Symbol) Last[expr] gives the last element in expr.
LinkInterrupt[link] sends an interrupt to the program at the other end of the specified MathLink connection.
Messages[symbol] gives all the messages assigned to a particular symbol.
NotebookClose[notebook] closes the notebook corresponding to the specified notebook object. NotebookClose[] closes the current evaluation notebook.
NotebooksMenu is a global option that specifies which recently opened notebooks are listed under the File menu.
Overlaps is an option to StringCases, StringCount, and StringPosition that specifies how to treat overlapping substrings.
PassEventsUp is an option to EventHandler that specifies whether events handled by a particular event handler should be passed up to event handlers in outer expressions.