BibTeX / LaTeX

Well, this is not actualy a programming question, but hope people don't mind me asking it here. I am programming a BibTex parser thingy, and I was wondering about a thing. If this is an example:

Code:

---

@Article{Decamp:1992zt,
  author =        "D. Decamp and others",
  collaboration ="ALEPH",
  annote=        "",
  journal =        "Phys. Lett.",
  volume =        "B279",
  year =        "1992",
  pages =        "411-421",
  SLACcitation = "%%CITATION = PHLTA,B279,411;%%",
  title        = "Measurement of the tau lepton lifetime"
}

---

How is actualy that yellow part made? Is it a rule for that? Or does the user chose it him self. I have been looking all over the place for it. But I can't find any info on exactly that part. Any help?


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