st: replace and variable subscripts

["Sergey Chernenko" <sergey.chernenko@alum.wustl.edu>]

Dear Stata Users:

Is the following behavior of -replace- documented anywhere?

. set obs 10
obs was 0, now 10
. gen x = _n
. replace x = x - x[1]
(1 real change made)
. fl
     +------------+
     |          x |
     |------------|
  1. |          0 |
  2. |          2 |
  3. |          3 |
  4. |          4 |
  5. |          5 |
     |------------|
  6. |          6 |
  7. |          7 |
  8. |          8 |
  9. |          9 |
 10. |         10 |
     +------------+

I would have expected -replace- to subtract 1 from each observation, not
just the first one.

Thanks.

Sergey

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