The required part is REQUIRED. The optional part MAY be empty; if the optional part is empty, the "?" character before it MAY be omitted. If the optional part is empty and the "?" character is present, then the "?" character MUST be ignored.
If the optional part is not empty, it consists of one or more "parameter=value" settings, delimited by the reserved "&" character as follows:
(in this case the last "&" character MUST be ignored).
Each of these settings is expected to appear in "parameter=value" form:
<parameter's name>=<parameter's value>
If the value part is omitted, then the corresponding parameter is assigned an empty value. In this case the "=" character MAY also be omitted. Example of such an optional part of URL:
subj=Test&path=&subscribe&to=Test+Robot
In this example, parameters "path" and "subscribe" become empty, the parameter "subj" becomes equal to "Test" value, and the parameter "to" becomes equal to "Test Robot" value (because "+" represents the white space, see the corresponding section above).
Parameters specified in the optional part of URL are also optional by nature. If a certain parameter does not appear in the given URL at all, it takes a default value; and default values for most of optional parameters are defined below, where the URL schemes are enumerated.
The "parameter=value" pairs MAY have an arbitrary order of appearance in an optional part of URL.
For example, this optional part of URL:
to=Test+Robot&path=&subj=Test&subscribe
is equivalent to the previous example.
5.3.1. Dealing with inappropriate reserved characters -+---------------------------------------------------
The reserved character "?" MUST be used only once in a URL; if there are many "?" in some URL, then the first appearance of "?" SHOULD be treated as the delimiter between required and optional parts of that URL, and the remaining "?" MAY be treated as if they were properly encoded ("%3F" character triplets), or even ignored.
The reserved character "=" MUST be used only once in a parameter setting; if there are many "=" characters in some setting, then the first appearance of "=" SHOULD be treated as the delimiter between that parameter's name and the parameter's value; and the remaining "=" characters, encountered before the next "&" (or before URL's ending, if it's the rightmost "parameter=value" pair) MAY be treated as if they were properly encoded octets of that parameter's value ("%3D" triplets), or even ignored.
"The first appearance" means the leftmost one, because it is natural to parse the scheme-specific part of URL in left-to-right order.
The programs interpreting Fidonet URL MAY also stop the whole interpreting and ignore the rest of URL after the position where an inappropriate reserved character is first encountered. This behaviour is especially RECOMMENDED for the programs trying to isolate URLs from some plain text, where the white spaces and/or other delimiters before and after URLs tend to be sometimes omitted by chance.
The URL schemes enumerated below designate resources that are most often used in typical actions involving netmail or echomail composed and sent.
According to the above section of delimiter guidelines, the ":" character (and not the "://" character triplet) SHOULD be used as the delimiter after <scheme> part of such URLs.
6.1. "netmail:" scheme -+--------------------
The "netmail:" scheme is used to designate the Fidonet netmail address of an individual or service. It uses standard Fidonet addressing notation, <zone>:<net>/<node>.<point>@<domain> (see FSP-1004 for details).
The character "/" has its literal meaning for this scheme.
When a "netmail:" hyperlink is used (clicked, followed), a netmail composer software MAY be launched. With this possibility in mind, several optional parameters are designed for the "netmail:" URL scheme.
The "to" optional parameter is used to designate the name of netmail addressee. Its default value MAY be "Sysop" or "SysOp". The default value MAY also be determined by some user setting of the netmail composer used to process the "netmail:" URL.
The "subject" optional parameter is used to designate the subject line of the netmail message composed. Its default value is empty; the default value MAY also be determined by some user setting of the netmail composer used to process the "netmail:" URL.
--- Заповедал не зря милосердный Аллах по словам правоверных судить о делах!.. * Origin: Ты можешь ── но это не ускорит обретение тобою нирваны! (2:5063/88)
