Just a quick question on BSD partioning.

Should partitions be created with any space between them?  For instance
if a disk was to be partitioned as
      20Mb           128Mb                        20Gb
 |<-Linux
Boot->|<----swap---->|<-----------------4.2BSD----------------->|
 
|0--------40920|40921---303105|303106----------------------------4194304
0|

Should the parameters be

Partition | Start  |   End    | Size/Mb
------------------------------------------
 ext2     | 0      | 40920    | 40920/20Mb
 swap     | 40921  | 303105   | 262144/128Mb
 4.2bsd   | 303106 | 42246146 | 41943040/20Gb 

I only ask because a couple of the examples posted in the mailing list
have had the partitions stop and start on the same ?block?.

E.g. from http://mail-index.netbsd.org/port-cobalt/2001/05/15/0001.html
" f:   262521  1024002       swap                        # (Cyl. 1806 -
2268)
  g:   409941  1286523 Linux Ext2        0     0         # (Cyl. 2269 -
2991)"

Would indicate that 
                         Size 1024002                   Size 409941
.........--------|262521----swap-----1286523|
                                           |1286523----Linux
Ext2---1695454|

If you can see my poor attempt at ascii art you will notice that these
two partitions seem to overlap at 1286523.  I am ignorant in the ways of
BSD partitioning but I would assume that this WOULD BE BAD.

Should the partitions be created to be concurrent or should some space
be left between them?  E.g. 

Partition | Start  |   End    |
------------------------------
 ext2     | 0      | 10000    | 
 swap     | 10010  | 20010    | 
 4.2bsd   | 20020  | 42246146 |