Name, Part: ident + optional .-separated idents

MODDEF:
1: export module Name;        - defines module 'Name'
                                    (once) LOCAL in d_modVect
                                    d_currentIdx = Name's index

PARTDEF:
4: export module Name:Part    - defines the Name:Part partition
                                    (once) LOCAL in d_modVect
                                    declare module Name
                                    Name imports Name:Part
                                    d_currentIdx = Name:Part's index
         
------------------------------
                           
MODDECL:
2: [export] import Name;      - declares Name

                                    d_moduleIdx = add Name to d_modVect

                                
                                in a module definition,
                                in a partition definition:
                                    d_currentIdx != ~0UL:
                                        [d_currentIdx].imports(d_moduleIdx)

                                otherwise: no further action

                                -------------------------------------------

                                (Components of 'Name' are available in this
                                file). When used in the module
                                definition itself its components automatically
                                have access to the components of 'Name'.

PARTDECL:

5: [export] import :Part;     - in module definition files: export required, 
                                in partition definition or partition source
                                files: import Name:Part in Name module
                                (MODDEF: 1)

                                
MODSRC
3: module Name;               - a module (or partition) source file of
                                module (partition) Name.

// PARTSRC:
// 6: import :Part;              - in a a Name:Part source file
//                                 (after 'module Name;' (MODSRC: 3))





