Make Template inserts a template based on a selected function name.

Open opens a dialog box for opening an existing file.

AbsoluteFileName["name"] gives the full absolute version of the name for a file in your filesystem.

ActionMenu[name, {lbl_1 :> act_1, lbl_2 :> act_2, ...}] represents an action menu with label name and with items labeled lbl_i that evaluates the expression act_i if the ...

x += dx adds dx to x and returns the new value of x.

Append[expr, elem] gives expr with elem appended.

ArcSinDistribution[{x min, x max}] represents the arc sine distribution supported between x min and x max.

ArcSin[z] gives the arc sine sin -1 (z) of the complex number z.

ArrayDepth[expr] gives the depth to which expr is a full array, with all the parts at a particular level being lists of the same length, or is a SparseArray object.

AutorunSequencing is an option for Manipulate that specifies how autorun should use the controls provided.