Section Headings

It takes a little bit of time to break up log input lines to different fields.

In order to maximize speed, Web Log Filter let's you apply filters right after a line has been read and before it has been separated into the various log line fields (such as url, referrer, etc.).

You can do this by placing filter rules under a section indicated by:

@PRESPLIT

Under this section header, the only field you can refer to is line which holds the contents of the entire raw log line.

Most of your rules by contrast will take place under the (default) section:

@POSTSPLIT