a question, can i edit map on WOTL?

[SilverRegret]

i mean, we have desert map, volcano map, but we can only found snowy field on few event battle only, so im thinking of adding snow to fovoham plains, but is it possible to do it on WOTL?
if i can, what program should i use?
i've read this.. http://ffhacktics.com/smf/index.php?topic=2479.180 but can it be used to open WOTL map? or there's other program i can use to edit it?

or.. perhaps make use of some of the snow event battle map like ziekden fort? (i mean to make it random battle encounter, maybe?)