Small question about Skyrim realistic overhaul

[DangerousDeraz]

Hello guys, first post here just started installing the patch looking forward to it.
 

I just wanted to know whether i should install parts 1 AND 3 only from SRO or should i install parts 1,2 and 3?  because that 1-3 thing kinda made me confused.

[z929669]

2 hours ago, DangerousDeraz said:

Hello guys, first post here just started installing the patch looking forward to it.
 

I just wanted to know whether i should install parts 1 AND 3 only from SRO or should i install parts 1,2 and 3?  because that 1-3 thing kinda made me confused.

1-3 means 1 through 3, so it includes 2.