Basically, it goes something like this,
Spchar ID out x,y,u,v,w,h,a
Spchar ID x,y,u,v,w,#vflip
I forgot what the # name is but the ? Button has a list of attributes. What this code does is read the information of a sprite (where on the sp sheet it is,size of the Image) and then places a sprite with the same information, but flipped
1そうだね プレイ済み