NOTE A runtime can be extended because it's implemented by a runtime library, not by the compiler. For example, the capabilities of Taligent's runtime that Taligent's C++ code depends on (such as dynamic class loading) can be emulated by the runtimes of most C++ systems.
At Taligent, use of language constructs or implementation dependencies beyond those specified by the ISO/ANSI C++ draft standard must be approved by the architecture team. No such additions have been approved for the Taligent Application Environment beyond dynamic class loading.