Origin for each line in mrc.conf from check-in aea391e34e:

5fb1968943 2019-10-19    1: # vim:ft=make:
2f11a995dc 2019-10-19    2: 
aea391e34e 2019-10-19    3: # cleanvar
aea391e34e 2019-10-19    4: # CLEANVAR_DIRS=/var/run /var/spool/lock /var/spool/uucp/.Temp
aea391e34e 2019-10-19    5: 
2f11a995dc 2019-10-19    6: # random
2f11a995dc 2019-10-19    7: # ENTROPY_FILE=/var/db/entropy/random
2f11a995dc 2019-10-19    8: # ENTROPY_DIR=/var/db/entropy
2f11a995dc 2019-10-19    9: 
2f11a995dc 2019-10-19   10: # hostname
2f11a995dc 2019-10-19   11: # HOSTNAME=Amnesiac
2f11a995dc 2019-10-19   12: 
2f11a995dc 2019-10-19   13: # ifconfig
2f11a995dc 2019-10-19   14: # IFCONFIG_IFACES=lo0
2f11a995dc 2019-10-19   15: # IFCONFIG_lo0=inet 127.0.0.1/8 up
2f11a995dc 2019-10-19   16: 
2f11a995dc 2019-10-19   17: # kld
2f11a995dc 2019-10-19   18: # KLD_LIST=### ### ###
2f11a995dc 2019-10-19   19: 
2f11a995dc 2019-10-19   20: # wlans
2f11a995dc 2019-10-19   21: # WLANS_###=wlan#
aea391e34e 2019-10-19   22: # WLANS_wlan#_ARGS=### ###