The sample code should be updated to reference the current version:

  A JVM TI environment can be obtained through the JNI Invocation API GetEnv function:

  jvmtiEnv *jvmti;
  ...
  (*jvm)->GetEnv(jvm, &jvmti, JVMTI_VERSION_1_0);

Also, the jvmtiEnvAccess should link to the GetVersionNumber definition of the version bits.

And, it would be good if the version constants were listed in the spec.
And it should be clarified in the spec that if features of a particular version are used, a compatible version must have been requested from GetEnv.