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)
