Abstract: Context-sensitive content may be created that may be recognized by a particular program but ignored by other programs. For example, in an e-mail message or other type of message, content could be created that advises the user to download a particular client for an enhanced content-viewing experience, along with a link pointing to a site where the client may be downloaded. This content and link could be surrounded by tags that would not be recognized by most clients, but that would be recognized by the client that provides the enhanced experience. Thus, most clients would render the advice and link, but the client that provides the enhanced experience could be configured to omit the link when it recognizes the surrounding tags, since a recipient who is viewing the e-mail with that client already has access to the enhanced experience.

Abstract: Context-sensitive content may be created that may be recognized by a particular program but ignored by other programs. For example, in an e-mail message or other type of message, content could be created that advises the user to download a particular client for an enhanced content-viewing experience, along with a link pointing to a site where the client may be downloaded. This content and link could be surrounded by tags that would not be recognized by most clients, but that would be recognized by the client that provides the enhanced experience. Thus, most clients would render the advice and link, but the client that provides the enhanced experience could be configured to omit the link when it recognizes the surrounding tags, since a recipient who is viewing the e-mail with that client already has access to the enhanced experience.