A scope is a logical boundary in PowerShell that isolates the use of functions and variables. Scopes can be defined as global, local, script, and private. They function in a hierarchy in which scope information is inherited downward. For example, the local scope can read the global scope, but the global scope can’t read information from the local scope. Scopes and their use are described in the following sections.
As the name indicates, a global scope applies to an entire PowerShell instance. Global scope data is inherited by all child scopes, so any commands, functions, or scripts that run make use of variables defined in the global scope. However, global scopes are not shared between different instances of PowerShell.
The following ...