(2) Check "Restrict to start domain(s)"
Note: It is very important to check (2). If you fail to do this, the index file will be polluted by external entries not related to the encyclopedias. If you fail to do this, we have to re-built the index again from scratch. To check that we have correct index file, go to "Index Administrator" and select the last option "Generate statistics". It should show the indexes of the crawled encyclopedias (and nothing else!)
Start Crawling Job: You can define URLs as start points for Web page crawling and start crawling here. "Crawling" means that YaCy will download the given website, extract all links in it and then download the content behind these links. This is repeated as long as specified under "Crawling Depth". A crawl can also be started using wget and the post arguments for this web page.