NetShell and Command Inheritance
NetShell is designed to provide command inheritance, which means that a command valid in a given context is also valid for all of its subcontexts. For example, if a command is valid in the ras context, it is also valid in its ip and ipx subcontexts.
Command inheritance ensures that all commands common to the NetShell root are available in all subcontexts. This enables commands that provide basic functionality such as context navigation, popd or pushd for examples, to be available in all contexts.
Common commands can be overridden in a context if another command in a context (or subcontext) is defined with the same name. For example, if ras has a command called sampleping, and the ipx subcontext also had a command called sampleping that performed a different operation, the ipx version of sampleping would override the ras version when a user was specifically working in the ras ipx subcontext.