+These executables can reference additionaly functionality in the form
+of assembly references. By default those assembly references are
+resolved as follows: the \fBmscorlib.dll\fR is resolved from the
+system profile that is configured by Mono, and other assemblies are
+loaded from the Global Assembly Cache (GAC).
+.PP
+The runtime contains a native code generator that transforms the
+Common Intermediate Language into native code.
+.PP
+The code generator can operate in two modes: just in time compilation
+(JIT) or ahead of time compilation (AOT). Since code can be
+dynamically loaded, the runtime environment and the JIT are always
+present, even if code is compiled ahead of time.
+.PP