[R] FW: using R under windows

[Simpson, William]

 I am used to using R under unix. I have a problem with R 
 under Windows-2000:
 Suppose I have a plain text file code.r full of R code 
 that I want to source into R. My problem is that Windows 
 invisibly tacks ".txt" onto the end of the filename (the name 
 looks like code.r but it is really code.r.txt). How to get 
 windows to both allow me to call it code.r (for real! Not 
 code.r.txt) and to edit it as a text file by default (say 
 with Notepad)?

BTW is there any way to get Windows to stop its fiddling with the filename
extensions?
If I call something file.txt it appears as file (although the real name is
file.txt)

 Thanks for any help.
 
 Bill Simpson

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