| • External modules: | Linking your libraries to the virtual machine | |
| • C callout: | Calls from Smalltalk to C | |
| • C data types: | Manipulating C data from Smalltalk | |
| • Smalltalk types: | Manipulating Smalltalk data from C | |
| • Smalltalk callin: | Calls from C to Smalltalk | |
| • Smalltalk callbacks: | Smalltalk blocks as C function pointers | |
| • Object representation: | Manipulating your own Smalltalk objects | |
| • Incubator: | Protecting newly created objects from garbage collections | |
| • Other C functions: | Handling and creating OOPs | |
| • Using Smalltalk: | The Smalltalk environment as an extension library | |