You can import proxies from the two external sources: from a Web-server or text file. When importing from a web-server you should specify the URL pointed to document with the proxy list. URL will be saved in the last recently used list and will be available in the next run of WideCap control panel.
After grabbing the document it will be tested to match with regexp, and matched results will be available in the text field. Just click on the OK button to transfer results to the active proxy list editor.
For text files all is same, except proxies will be taken from the file on your disk.