Environment global object.
A Environment global object is created for you and only this object can exist in the application. It is named Environment and is globally accessible.
global name space.
The Environment object let you access environment variables.
see functions samples.
function get_value (value_name)
value_name. String. Name of the environment variable to retrieve
Queries the value of an environment variable. Returns undefined if the value is not found, and the string contained by the variable otherwise.
Get the well-known PATH variable and split it according to platform specific uses: