When you add one source with the help of the "Add" button or modify one or several selected sources, you can see the "Source settings" window.
Note:
When you place a cursor over a parameter, you can see a tooltip.

The window has two tabs:
1. Source - settings that concern this exact source (or several sources) and proxy downloads from it. See the description below.
2. Proxy - settings of proxy checks from this source (or several sources). See more information on these settings in the How to set proxy parameters section
"Source" tab

Address |
Internet page address or a hard disc path to the file |
Label |
You can specify user labels for sources. See more information on labels in the next section: How to work with labels |
Interval of downloading proxies from a source |
Sources will be downloaded again to search for new proxies during these time intervals. Refer here for more information on source download. |
Javascript execution |
This option is not available yet. |
Regular expressions for proxy parsing. |
A list of regular expressions for each source, used for proxy search. See more information in the corresponding section. |
See also the description of the "Proxy" tab in the How to set proxy parameters section