6.4 Mapping for Modules Slice modules map to C++ namespaces. The mapping preserves the nesting of the Slice definitions. For example: module M1 { module M2 { // ... }; // ...};// ...module M1 { // Reopen M1 // ...}; This definition maps to the corresponding C++ definition: namespace M1 { namespace M2 { // ... } // ...}// ...namespace M1 { // Reopen M1 // ...} If a Slice module is reopened, the corresponding C++ namespace is reopened as well.