What are the different GuiXT variables and what is their scope?
supports two types of variables a) Global variables and b) Local
variables (or Parameters). A GuiXT variable (local or global)
does not have a type.
Global variables: As the name suggests, the scope of such
variables is global i.e. they can be referenced from any GuiXT
or Input Script within the current session. There is no need to
declare a global variable in GuiXT
variables (or Parameters): The local variables have limited
scope. They can be used only the script that defines them. All
parameters should be declared before using them.