-In the Linux example above, I could tell my machine is running x86 because the
-result of the `uname` command said "i386" at the end. Another machine I have
-says "x86\_64" at the end. On a Mac, you can also say `uname -m` in a Terminal
-session, and it will say something like "i386". I think that Mac OS Xs from Lion
-/ 10.7 forward have all been x86\_64-only. On Windows, I don't know how to
-collect this information. But generally, machines running Windows XP will
-probably be i386/32-bit (unless it's a version of Windows with "64-bit" or
-"x64" in its title); machines running Windows Vista or Windows 7 or Windows 8
-could be running either x86/32-bit or x64/64-bit.
-(Update: I found
-[this Microsoft page](http://windows.microsoft.com/en-us/windows/32-bit-and-64-bit-windows)
-that may help.)
+On Linux or Mac OS X, you can open a terminal and type `uname -m`. If the
+result is "x86\_64", then you've got x64/64-bit. If it's "i386" or something
+like that, then you've got x86/32-bit. I think that Mac OS Xs from 10.7 / Lion
+forward have all been x86\_64-only.
+
+On Windows,
+[here is a page that can help you figure this out](http://windows.microsoft.com/en-us/windows/32-bit-and-64-bit-windows).
+I think that most machines running Windows XP will be x86/32-bit (unless it's
+a version of Windows with "64-bit" or "x64" in its title); machines running
+Windows Vista or Windows 7 or Windows 8 could be running either x86/32-bit or
+x64/64-bit.