[R] sink() output to another directory

[Rich Shepard]

   Neither ?sink nor ?capture.output indicates how the output file can be
specified to be in a directory other than the cwd.

   When the cwd is ../analyses/ and I want the output to be in
../analyses/stat-summaries/ how do I write this?

   sink('example-output.txt')
   print(summary(df))
   sink()

writes output to the current directory. My attempts to prefix the file name
with ./ or just / don't sit well with R. What is the proper syntax?

TIA,

Rich