smf
smfx
smg
smh
smht
smi
smil
smiles
smk
sml
smlicense
smm
smn
smo
smol
smov
smp
smp3
smpd
smpeg
smpg
smprf
smr
smrailroadssavedgame
smrd
sms
smt
smu
smus
smv
smw
smwt
smx
smz
smzip
sn
sn_
sn1
sn2
sn3
sn4
sn5
sna
snag
snagproj
snap
snapfireshow
snapshot
snc
snd
filename extensions