NotebookAutoSave is a notebook option which specifies whether the notebook should automatically be saved after each piece of output generated by evaluation in it.
RudvalisGroupRu[] represents the sporadic simple Rudvalis group Ru.
StopScheduledTask[obj] deactivates the task obj.
UsingFrontEnd[expr] evaluates expr, making use of a front end if necessary.
Step Out stops the debugger after finishing all evaluations in a stack.
Blur
(Built-in Mathematica Symbol) Blur[image] gives a blurred version of image.Blur[image, r] gives a version of image blurred over pixel radius r.
Bookmarks is an option for Manipulate and related functions that gives a list of bookmark settings.
DefaultLabelStyle is a low-level option for formatting and related constructs that specifies the default style to use in displaying their label-like elements.
DiracComb[x] represents the Dirac comb function giving a delta function at every integer point. DiracComb[x_1, x_2, ...] represents the multidimensional Dirac comb function.
DirectoryQ["name"] gives True if the directory with the specified name exists, and gives False otherwise.