> 2.  In internal releases of Mosaic for Windows 2.0b5, we've added an
> attribute to A called SUBJECT, which would be used with mailto: URLs for
> just what you think it would be.  It seems to me, though, that TITLE might
> be suitable for use for this.  Opinions on this?
Strongly negative...  The SUBJECT attribute would only be
applicable for tail anchors when the head anchor had a particular
URL access scheme.  Let's not turn <A> into another <INPUT>, with
a dozen special-purpose attributes that work differently
in every special case. 
> If there are strong negative feelings about the use of TITLE for this, how
> do people feel about a SUBJECT attribute?
TITLE is already used to describe the head anchor to the reader,
so overloading it for this purpose is also undesireable.
What is needed is a general-purpose way to specify extra access
parameters in an anchor.  Something that could handle:
    * Passing parameters to a Java applet;
    * Specifying a default "Subject:" and other message headers
      for mailto: URLs; [*]
    * Specifying a default message body for mailto: URLs [*]
    * Supplying a set of NAME=VALUE fields for http: URLs
      with METHOD=POST and ENCTYPE=application/www-form-urlencoded
      or ENCTYPE=multipart/form-data (sort of like <INPUT TYPE=HIDDEN>); [**]
    * For that matter, specifying the METHOD and ENCTYPE for 
      http: URLs;
    * Specifying search criteria to WAIS queries;
    * Passing arbitrary parameters to any new protocol
      or service that might come along later.
[*] There are obvious security implications for these
    two, but user agents currently let the user edit
    outgoing mailto: requests before sending them; that
    behavior would have to be mandatory.
[**] This could be used to specify a pre-filled-in FORM
    and might be useful for e.g., bookmarks to canned queries.
--Joe English
  joe@art.com