### Name: tangleR
### Title: function to tangle a file
### Aliases: tangleR
### Keywords: file programming

### ** Examples

## Not run: 
##D ## This example cannot be run by examples() but should be work in an interactive R session
##D   tangleR("testfile.rev")
## End(Not run)
"tangleR(\"testfile.rev\")"
## The function is currently defined as
function(in.file,out.file,expand.roots=NULL,expand.root.start=TRUE){
# german documentation of the code:
# look for file webR.pdf, P. Wolf 050204
...
  }



