The program downloads a website and parses the html code and puts the result into a table. This table can be saved as CSV file (can be opened in Excel for example).
You can create a pascal script which can download websites, parses the table entries (read and write from the table) and for example following the links to collect detail information. The pascal script can save the result as CSV file. It is no problem to Extract the needed information. Lets say you want to Download All information available for a list of stocks and do some calculatation and output the result as Excel table. Or you want to extract all adresses from a list of adresses on a website and put them into a data base. Once the script is created and runs well you can call the program with the script file name as parameter and the program will extract all information in the background.
