how can i open .continent files

[WildBeast05]

i found a mod called hell island no light and it massively boosted the fps i wanted to try the same thing for few other maps that have low fps i found it changes the lights2.continent file with a xml
bph__new_lights2.xml :
table>
statics>
/statics>
values>
workviews/>
/values>
/table>
Core.lua :
local ThisModPath = ModPath

Hooks:Add("BeardLibCreateScriptDataMods", "F_"..Idstring("BeardLibCreateScriptDataMods:Hell Island No Light"):key(), function()
if Global.load_level == true and Global.level_data.level_id == "bph" then
BeardLib:ReplaceScriptData(ThisModPath.."/scriptdata/bph_new_lights2.xml", "custom_xml", "levels/narratives/locke/bph/lights2/lights2", "continent", {custom = true})
end
end)

[WildBeast05]

i can open it with DBV but depending of if i open it with custom xml or json the contents are a bit diferent
json :
lights2.txt
custom xml :
lights2_continent.txt

yeah seems like custom xml is the way with dbv