opendarwin man page for global

global(n)						       Tcl Built-In Commands							 global(n)

__________________________________________________________________________________________________________________________________________________

NAME
       global - Access global variables

SYNOPSIS
       global varname ?varname ...?
_________________________________________________________________

DESCRIPTION
       This  command  is  ignored  unless a Tcl procedure is being interpreted.  If so then it declares the given varname's to be global variables
       rather than local ones.	Global variables are variables in the global namespace.  For the duration of the current procedure (and only while
       executing in the current procedure), any reference to any of the varnames will refer to the global variable by the same name.

SEE ALSO
       namespace(n), upvar(n), variable(n)

KEYWORDS
       global, namespace, procedure, variable

Tcl																	 global(n)