My concern was that I would not be issued a SEAL Challenge Contract because of my age, if I WERE to have to use a second or third attempt I would be above the cutoff age. So that was my question. Sorry for the lack of detail.
Extensible Markup Language (XML) is a markup language that defines a set of rules for encoding documents in a format which is both human-readable and machine-readable. It is defined by the W3C 's XML 1.0 Specification and by several other related specifications, all of which are free open standards.
XML is a markup language same as HTML. XML tag you can define your self for storing data. XML store (describe) data, nothing more (either temporary or permanent). XML was designed for describing well formed data. Also XML have some strict rules.