this is the original code to game2rpg in image. I add comment for you to key points to understand.
now if you looked at it, you will see a label called @DRAWITEM
SPCLR 1 & 2 it to clear sprite 1&2 only. what it ready saying clear sprite control manage number 1 & sprite control manage number 2
next you got a for loop
FOR I=1 TO 2 So I will be 1 then it will be 2 when it read.
0そうだね プレイ済み