scope:

Specifies PCTE in abstract, programming-language-independent, terms. It specifies the interface supported by any conforming implementation as a set of abstract operation specifications, together with the types of their parameters and results. It is supported by a number of standard bindings, i.e. representations of the interface in standard programming languages. The scope of this part is restricted to a single PCTE installation. It does not specify the means of communication between PCTE installations, nor between a PCTE installation and another system. A number of features are not completely defined in this part of ISO/IEC 13719, some freedom being allowed to the implementor. Some of these are implementation limits, for which constraints are defined (see clause 24). The other implementation-dependent and implementation-defined features are specified in the appropriate places in this standard.