Hmmm... I'm not really sure if I understand your question.
Do you wan't an explanation of the differences between global and local variables?
Global variables must be declared in the special "Sub Globals". These variables can be accessed throughout the whole program, so one sub can change the value of a variable and another sub can read the value.
All other variables are only accessible within their original sub. If the sub has been processed, all values of the "local" variables are lost.
specci48