fbc.exe -s gui formatter.bas
formatter.exe
erase i1.txt
erase i2.txt
erase i3.txt
erase i4.txt
erase i5.txt
erase i6.txt
erase i7.txt
erase i8.txt
erase i9.txt
erase i10.txt
erase i11.txt
erase i12.txt
erase i13.txt
erase i14.txt
erase i15.txt
erase i16.txt
erase i17.txt
erase i18.txt
erase i19.txt
erase i20.txt
ren w1.txt i1.txt 
ren w2.txt i2.txt 
ren w3.txt i3.txt 
ren w4.txt i4.txt 
ren w5.txt i5.txt 
ren w6.txt i6.txt 
ren w7.txt i7.txt 
ren w8.txt i8.txt 
ren w9.txt i9.txt 
ren w10.txt i10.txt 
ren w11.txt i11.txt 
ren w12.txt i12.txt 
ren w13.txt i13.txt 
ren w14.txt i14.txt 
ren w15.txt i15.txt 
ren w16.txt i16.txt 
ren w17.txt i17.txt 
ren w18.txt i18.txt 
ren w19.txt i19.txt 
ren w20.txt i20.txt 
erase formatter.exe