下記の文章の意味が分かりません。
誰か解説してもらえないでしょうか？
delta-metadataやらdelta-ILやらがさっぱりです。

The compiler supplies delta-IL and delta-metadata, which is used to replace parts of the existing IL and metadata in memory.
Delta-IL and delta-metadata simply refers to the gap used to insert the edited code.
If the edited methods have been JIT-ed into native x86 code, they are replaced with new x86 code.

なお、この文章は下記のページからの引用です。
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnvs05/html/edit_continue.asp