Useful readings to write your first filter

[Siamesecat]

Something I sometimes find helpful is to open the log window, reload the page, and read the purple print in the log window. That gives a complete list of all the web fllters used in the loading and processing of code on the page. The debug view shows the filters used in the web page, but it usually does not show all the filters that were used during the page loading because extra code is contained in stylesheets and javascript files.