wd0a partion openbsd 4.6

Hello, Can someone please tell me how I can clean my root partition? df -h Filesystem SizeUsed Avail Capacity Mounted on /dev/wd0a 2.0G2.0G -101M 105%/ /dev/wd0k 830G 84.7G704G11%/home /dev/wd0d 3.9G 40.0K3.7G 0%/tmp /dev/wd0f

a Question about PF.conf

Hello all, I am new with OpenBSD and PF - switched from FreeBSD to OpenBSD, and very Happy with it :) Question is about PF. In the standard pf.conf, is this last line - pass all flags S/SA keep state (to keep state) I altered the pf.conf to my needs, but I'm not sure about this last line. Do I