Editing Proxomitron (section)

== Overview ==
Properly configured, Proxomitron intercepts [[HTTP]] traffic between the user's browser and web servers. The program is capable of altering web page content by removing or adding text. Additionally, it can add, modify, or delete HTTP message headers, be configured to block connections or redirect requests based on the [[Uniform Resource Identifier|web page address]], and be configured to route connections through a remote proxy. The user can monitor connections and filter activations, if desired.

Program operation is dictated through the use of a configuration file containing specialized filters which can be written, edited, deleted, enabled or disabled by the user via the program's graphical user interface. (Third-party filters can also be imported, or "merged", into the configuration.) The filters utilize a "matching" language similar to the standard [[regular expression]]s used in text editing. Additional files, such as "blocklists" and SSL DLLs, can extend filtering capabilities.

Use of the program requires knowledge of the Proxomitron scripting language, and some familiarity with at least one of [[HTTP]], [[HTML]], [[JavaScript]], and [[Cascading Style Sheets|CSS]]. The scripting interface was not designed to be user-friendly. Because of these complications, the program can be difficult to customize for novice or non-technical users. A default set of filters is included with the program; advanced filters and filter sets written by experienced users are also available online. (See external links.)