Allows you to add a parameter and value that will be added into a channel log. This should match a preset variable in the file. You can list the params with the keyword param and you can erase a param when you just put in the variable name without the value and that value will be deleted.
/as chan #webmaster log param LoggedBy John Doe
/as chan #webmaster log param LoggedBy
/as chan #webmaster log param
Nice for adding specific event information into a channel log from the web interface.