questions about synonyms

[Ma, Xiaohui (NIH/NLM/LHC) [C]]

Hello,



I have an couple of questions about synonyms.



1. I got a very big text file of synonyms. How I can use it? Do I need to index 
this text file first?



2. Is there a way to do synonyms' highlight in search result?



3. Does anyone use WordNet to solr?





Thanks so much in advance,