Could Somebody Explain Our Procurve Running Config on an HP 5308XL Procurve?

I am new to Procurve configuration, and I was wondering if somebody could explain part of our running config? The entire thing is posted in the code section. Here's our question...

It seems that on interface H3-H4, we turn lacp (we're assuming this is link aggregation protocol) OFF, but just a few lines later, it's being trunked, and turned back on? Is there some reason we have to turn it off first? Is that what is actually happening, and why? Thanks!

Running configuration:
 
; J4819A Configuration Editor; Created on release #E.07.40
 
hostname "HP ProCurve Switch 5308XL"
snmp-server location "HS Labs and Media Center Wing"
time daylight-time-rule None
cdp run
module 8 type J4821A
module 6 type J4820A
module 3 type J4820A
module 1 type J4820A
module 2 type J4820A
module 4 type J4820A
module 5 type J4820A
interface H3
   no lacp
exit
interface H4
   no lacp
exit
trunk H3-H4 Trk1 LACP
ip default-gateway 10.65.8.1
snmp-server community "public" Unrestricted
vlan 1
   name "DEFAULT_VLAN"
   untagged H1-H2,Trk1
   ip address 10.65.8.3 255.255.248.0
   no untagged A1-A24,B1-B24,C1-C24,D1-D24,E1-E24,F1-F24
   exit
vlan 197
   name "admin-ofc"
   exit
vlan 181
   name "Admin"
 
   exit
vlan 190
   name "HS-140"
   untagged A1-A24,B1-B24
   tagged Trk1
   exit
vlan 189
   name "HS-139"
   untagged E1-E24,F1-F24
   tagged Trk1
   exit
vlan 187
   name "HS-Lib"
   untagged C1-C24,D1-D24
   tagged Trk1
   exit
vlan 182
   name "HS"
   exit
spanning-tree Trk1 priority 4
password manager
password operator
 
HP ProCurve Switch 5308XL#

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