Clear the environment settings ?

Hi,
whenI use printenv at the uboot mini2440 prompt I get a LOT of settings.
What is the way to start with a clean list ? 
See pasted text below:

MINI2440 # printenv

bootdelay=3

baudrate=115200

ethaddr=08:08:11:18:12:27

ipaddr=10.0.0.111

serverip=10.0.0.4

netmask=255.255.255.0

usbtty=cdc_acm

mini2440=mini2440=0tb

bootargs_base=console=ttySAC0,115200 noinitrd

bootargs_init=init=/sbin/init

root_nand=root=/dev/mtdblock3 rootfstype=jffs2

root_mmc=root=/dev/mmcblk0p2 rootdelay=2

root_nfs=/mnt/nfs

set_root_nfs=setenv root_nfs root=/dev/nfs rw
nfsroot=${serverip}:${root_nfs}

ifconfig_static=run setenv ifconfig
ip=${ipaddr}:${serverip}::${netmask}:mini2440:eth0

ifconfig_dhcp=run setenv ifconfig ip=dhcp

ifconfig=ip=dhcp

set_bootargs_mmc=setenv bootargs ${bootargs_base} ${bootargs_init}
${mini2440} ${root_mmc}

set_bootargs_nand=setenv bootargs ${bootargs_base} ${bootargs_init}
${mini2440} ${root_nand}

set_bootargs_nfs=run set_root_nfs; setenv bootargs ${bootargs_base}
${bootargs_init} ${mini2440} ${root_nfs} ${ifconfig}

mtdids=nand0=mini2440-nand

mtdparts=mtdparts=mini2440-nand:0x00040000(u-boot),0x00020000(u-boot_env),0x0050
0000(kernel),0x3faa0000(rootfs)

bootcmd=mmcinit ; ext2lÏad mmc 0:2 0x31000000 uImage ; bootm 0x31000000

bootargs=console=ttySAC0,115200 noinitrd root=/dev/mtcblk0p2 rootwait=4 rw
ip=dhcp init=/bin/sh

partition=nand0,0

mtddevnum=0

mtddevname=u-boot


Environment size: 1215/131068 bytes

<uboot commands reference> 

http://www.google.co.nz/#sclient=psy-ab&hl=en&source=hp&q=ub...

couldn't see any in LITE5200BUBPG.pdf

Tnx for your reply, Dave.

I have been at the Uboot page and did find one way to clear settings , it
is "setenv name" without entering a value. I did this about 25 times and
now only the baudrate is set. 

Starting with cleared environment now, trying to get debian to boot from
SD.

Kind regards,

Ben

Ben,

Actually. I saw that as well but thought it was a pretty "long-winded" way
of achieving a simple task!

Dave