What does Dos mode vs unix mode mean when you install cygwin

["Castle, Eric" <Eric_Castle at intuit dot com>]

When using the installer to install Cygwin 1.3.2, there is a step where it
asks what the default text file type should be, with the 2 choices being
either dos or unix.  What is the difference between the 2 choices?   Is this
just how cygwin, including processing files in perl, uses either \r\n or \n
for line termination?

I don't recall the old installer program (called full.exe) ask that question
back on B18.

Any recomendation on which type to use? I've been choosing "dos" but not
sure what that is really doing vs choosing unix. 

Thanks,
Eric

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