Syntax	A bindDeclaration is:   bind [var] id to variableReference     { , [var] id to variableReference }
Description	The bind declaration creates a new name (or names) for a variable reference (or references). You are allowed to change the named item only if you specify var. You can also bind to named non scalar constants. While variableReference is bound it does not disappear in the scope.
Example	Rename the n-th element of array A so it is called item and then change this element to 15. bind var item to A (n) item := 15
Details	The scope of the identifier (item above) begins with the bind declaration and lasts to the end of the surrounding program or statement (or to the end of the surrounding part of a case or if statement). During this scope, a change to a subscript (n above) that occurs in the variable reference does not change the element to which the identifier refers. You are not allowed to use bind at the outermost level of the main program (except nested inside statements such as if) or at the outermost level in a module. You can also optionally use the register keyword to request that the bind be done using a machine register. The syntax for bindDeclaration is actually:   bind [var] [register] id to variableReference     { , [var] [register] id to variableReference } In the current (2002) implementation, programs are run interpretively using pseudo-code and the register keyword is ignored.