R help - Jun 2014 - Assigning document id to each document containing in the Document Term Matrix (R Package "tm")

Dear All,
When I do "DocumentTermMatrix" analysis,  can I assign a document id
to the
document (i.e., the row in the attached matrix marked in red)?

Here is my code:
tdm=DocumentTermMatrix(corpus,control)
inspect (tdm2[5:20,9:14])


   Terms
Docs 002089 002223 002236 002268 002415 002439
  5       0      0      0      0      0      0
  6       0      0      0      0      0      0
  7       0      0      0      0      0      0
  8       0      0      0      0      0      0
  9       0      0      0      0      0      0
  10      0      0      0      0      0      0
  11      0      0      0      0      0      0
  12      0      0      0      0      0      0
  13      0      0      0      0      0      0
  14      0      0      0      0      0      0
  15      0      0      0      0      0      0
  16      0      0      0      0      0      0
  17      0      0      0      0      0      0
  18      0      0      0      0      0      0
  19      0      0      0      0      0      0
  20      0      0      0      0      0      0

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