Search folders contain the results of a search as a list of links to BSCW objects in case of a search in BSCW, and as a list of URLs in case of a Web search.
The contents of a search folder may be edited as a whole by:
adding another section of the list of hits generated by a search engine in case of a Web search;
repeating the search process with the identical query to update the search results, or with a modified query to, e.g., narrow down the search.
In order to keep only a few results of a Web search for future use, you may select and copy them to your clipboard and then paste them to a folder of your choice.