Despite the recommendation in RFC #1738 to encode such characters when they are supposed to be part of URLs, a number of Internet resources, entities and users keep using the "[]" braces in unencoded form, and this used to make YAM stop parsing an URL as soon as such characters were found, as in "<http://www.example.com/files[7]/myfile>". As a workaround for this problem, YAM 2.4 takes these characters as part of the URL. Parenthesis are allowed in URLs in unencoded form, which again negates the use of () to delimit URLs. You are advised to use "<" and ">" for this purpose.