When adding the JDK docs zip file (in my case: jdk-8-ea-docs-b123-all-09_jan_2014.zip) to a Platform (in my case: JDK 1.8 b123), the following APIs are missing:
...!/docs/jre/api/net/httpserver/spec/
...!/docs/jre/api/nio/sctp/spec/
...!/docs/jre/api/security/jaas/spec/
...!/docs/jre/api/security/jgss/spec/
...!/docs/jre/api/security/smartcardio/spec/
and the following is undesired:
...!/docs/technotes/guides/imf/api-sample/

I don't know how the algorithm to find the javadocs works, but the missing APIs all have the same pattern of .../api/subdir1/subdir2/spec/