MemoryConstrained[expr, b] evaluates expr, stopping if more than b bytes of memory are requested. MemoryConstrained[expr, b, failexpr] returns failexpr if the memory ...
MemoryInUse[] gives the number of bytes currently being used to store all data in the current Mathematica kernel session. MemoryInUse[$FrontEnd] gives the number of bytes ...
MenuCommandKey is an option for cells that specifies the keyboard shortcut to be associated with a style listed in the Format \[FilledRightTriangle] Style submenu.
MenuPacket[integer, string] is a MathLink packet indicating a menu request with title string.
MenuSortingValue is an option for cells and notebooks that specifies where a cell style, stylesheet, or palette is listed in the Format \[FilledRightTriangle] Style submenu, ...
MenuStyle is an option for menu-generating constructs that specifies the style to use in displaying menu items.
MenuView[{lbl_1 -> expr_1, lbl_2 -> expr_2, ...}] represents an object in which selecting the menu item with label lbl_i displays expr_i. MenuView[{lbl_1 -> expr_1, lbl_2 -> ...
MeshFunctions is an option for plotting functions that specifies functions to use to determine the placement of mesh divisions.
Mesh
(Built-in Mathematica Symbol) Mesh is an option for Plot3D, DensityPlot, and other plotting functions that specifies what mesh should be drawn.
MeshShading is an option for plotting functions that gives lists of colors to use for regions between mesh divisions.