DynamicWrapper[e, expr] represents an object that displays as e, but dynamically updates the expression expr whenever that object is visible on screen.

BeginJavaBlock[] begins an evaluation block equivalent to a JavaBlock, except that it works across a larger span than the evaluation of a single expression.

EndJavaBlock[] ends an evaluation block equivalent to a JavaBlock, except that it works across a larger span than the evaluation of a single expression.

 

ButtonBar[{lbl_1 :> act_1, lbl_2 :> act_2, ...}] represents a bar of buttons with labels lbl_i that perform actions act_i when pressed.

ClearSystemCache[] clears internal system caches of stored results.

OverBar[expr] displays with a bar over expr.

Sow[e] specifies that e should be collected by the nearest enclosing Reap. Sow[e, tag] specifies that e should be collected by the nearest enclosing Reap whose pattern ...

StepMonitor is an option for iterative numerical computation functions that gives an expression to evaluate whenever a step is taken by the numerical method used.

LinkWrite[link, expr] writes expr to the specified MathLink connection.