NTEMACS: dired: where does name "Copy of <FileName>" come from?

[David Combs]

NTEMACS: dired: where does name "Copy of <FileName>" come from?

  -rw-rw-rw-   1 David    root      10776576 05-24 19:52 Copy of 
fp0901-27Tue.mp3
  -rw-rw-rw-   1 David    root      10777600 05-24 20:09 Copy of 
fp0902-03Tue.mp3
  -rw-rw-rw-   1 David    root      10776576 05-24 20:05 Copy of 
fp0902-12Thu.mp3
  -rw-rw-rw-   1 David    root      10776576 05-24 20:02 Copy of 
fp0902-20Fri.mp3
  -rw-rw-rw-   1 David    root      10776576 05-24 19:58 Copy of 
fp0902-27Fri.mp3
  -rw-rw-rw-   1 David    root      10776576 06-05 01:58 Copy of 
fp0905-12Tue.mp3
  -rw-rw-rw-   1 David    root      10776576 06-05 01:50 Copy of 
fp0905-19Tue.mp3
  -rw-rw-rw-   1 David    root      10780672 06-05 01:46 Copy of 
fp0905-29Fri.mp3
  -rw-rw-rw-   1 David    root      10776576 05-14 13:13 Copy of fp12may09tu.mp3
  -rw-rw-rw-   1 David    root      10776576 05-14 13:10 Copy of fp4may09m.mp3
  -rw-rw-rw-   1 David    root      11161916 05-26 13:01 Copy of gr-1may09.mp3

ie, where did the "Copy of " come from?
(and how did it get into dired?) 



Thanks!

David