Start data extraction tasks via clicking the right-button pop-up menu Crawl after you have selected a target theme on the theme list of DataScraper.
There are two following ways to list themes:
If there are too many themes to be presented on one page, they will be paginated. Turn the pages over one by another to find the theme named as ComList_ali which is created in exercise stated in MetaStudio User's Guide. Click this row of the list so that the background color is changed to blue. Then click right-button pop-up menu item Crawl and input the number of clues to be crawled and submit it. You can find DataScraper begins turning pages over one by another in the browser region, which is the sign to extract data from the pages.
You can also click right-button pop-up menu item Statistics to see statistics information on this theme, e.g. how many clues in different status respectively.