MaxStepSize is an option to functions like NDSolve that specifies the maximum size of a single step used in generating a result.
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 -> ...
Missing
(Built-in Mathematica Symbol) Missing[] represents data that is missing.Missing["reason"] specifies a reason for the data being missing.Missing["reason", expr] associates the expression expr with the ...
MouseAnnotation[] gives any mouse annotation associated with the expression at the current mouse position.
MultiedgeStyle is an option for GraphPlot and related functions that specifies how to draw multiple edges.
Names
(Built-in Mathematica Symbol) Names["string"] gives a list of the names of symbols which match the string. Names[patt] gives a list of names matching the arbitrary string pattern patt.
NotebookGet[obj] gets the raw expression corresponding to the notebook represented by the notebook object obj. NotebookGet[] gets the raw expression corresponding to the ...
Notebook[{cell_1, cell_2, ...}] is the low-level construct that represents a notebook manipulated by the Mathematica front end.
NumberFormat is an option for NumberForm and related functions that specifies how the mantissa, base, and exponent should be assembled into a final print form.
NumberSeparator is an option for NumberForm and related functions which gives the string to insert at breaks between digits.