Block[{x, y, ...}, expr] specifies that expr is to be evaluated with local values for the symbols x, y, .... Block[{x = x_0, ...}, expr] defines initial local values for x, ...

DigitBlock is an option for NumberForm and related functions that specifies the maximum length of blocks of digits between breaks.

Modules in Mathematica allow you to treat the names of variables as local. Sometimes, however, you want the names to be global, but values to be local. You can do this in ...

JavaBlock[expr] causes all new Java objects returned to Mathematica during the evaluation of expr to be released when expr finishes. It is an error to refer to such an object ...

When you write a program in Mathematica, you should always try to set it up so that its parts are as independent as possible. In this way, the program will be easier for you ...

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.

BlockRandom[expr] evaluates expr with all pseudorandom generators localized, so that uses of SeedRandom, RandomInteger, and related functions within the evaluation of expr do ...

DialogSymbols is an option for Dialog which gives a list of symbols whose values should be localized in the dialog.

SymbolicOpenCLBlockDimension[dim] is a symbolic representation of an OpenCL kernel block dimension call.