diff --git a/12_day/sheet.c b/12_day/sheet.c
index 102381d..add69cc 100644
--- a/12_day/sheet.c
+++ b/12_day/sheet.c
@@ -53,6 +53,78 @@ void sheet_setbuf(struct SHEET *sht, unsigned char *buf, int xsize, int ysize, i
 	return;
 }
 
+void sheet_refreshmap(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, int h0)
+{
+	int h, bx, by, vx, vy, bx0, by0, bx1, by1;
+	unsigned char *buf, sid, *map = ctl->map;
+	struct SHEET *sht;
+	if (vx0 < 0) { vx0 = 0; }
+	if (vy0 < 0) { vy0 = 0; }
+	if (vx1 > ctl->xsize) { vx1 = ctl->xsize; }
+	if (vy1 > ctl->ysize) { vy1 = ctl->ysize; }
+	for (h = h0; h <= ctl->top; h++) {
+		sht = ctl->sheets[h];
+		sid = sht - ctl->sheets0; /* 将进行了减法计算的地址作为图层号码使用 */
+		buf = sht->buf;
+		bx0 = vx0 - sht->vx0;
+		by0 = vy0 - sht->vy0;
+		bx1 = vx1 - sht->vx0;
+		by1 = vy1 - sht->vy0;
+		if (bx0 < 0) { bx0 = 0; }
+		if (by0 < 0) { by0 = 0; }
+		if (bx1 > sht->bxsize) { bx1 = sht->bxsize; }
+		if (by1 > sht->bysize) { by1 = sht->bysize; }
+		for (by = by0; by < by1; by++) {
+			vy = sht->vy0 + by;
+			for (bx = bx0; bx < bx1; bx++) {
+				vx = sht->vx0 + bx;
+				if (buf[by * sht->bxsize + bx] != sht->col_inv) {
+					map[vy * ctl->xsize + vx] = sid;
+				}
+			}
+		}
+	}
+	return;
+}
+
+void sheet_refreshsub(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, int h0, int h1)
+{
+	int h, bx, by, vx, vy, bx0, by0, bx1, by1;
+	unsigned char *buf, *vram = ctl->vram, *map = ctl->map, sid;
+	struct SHEET *sht;
+
+	/* 如果refresh的范围超出了画面则修正 */
+	if (vx0 < 0) { vx0 = 0; }
+	if (vy0 < 0) { vy0 = 0; }
+	if (vx1 > ctl->xsize) { vx1 = ctl->xsize; }
+	if (vy1 > ctl->ysize) { vy1 = ctl->ysize; }
+	for (h = h0; h <= h1; h++) {
+		sht = ctl->sheets[h];
+		buf = sht->buf;
+		sid = sht - ctl->sheets0;
+
+		/* 使用vx0～vy1，对bx0～by1进行倒推 */
+		bx0 = vx0 - sht->vx0;
+		by0 = vy0 - sht->vy0;
+		bx1 = vx1 - sht->vx0;
+		by1 = vy1 - sht->vy0;
+		if (bx0 < 0) { bx0 = 0; } /* 处理刷新范围在图层外侧 */
+		if (by0 < 0) { by0 = 0; }
+		if (bx1 > sht->bxsize) { bx1 = sht->bxsize; } /* 应对不同的重叠方式 */
+		if (by1 > sht->bysize) { by1 = sht->bysize; }
+		for (by = by0; by < by1; by++) {
+			vy = sht->vy0 + by;
+			for (bx = bx0; bx < bx1; bx++) {
+				vx = sht->vx0 + bx;
+				if (map[vy * ctl->xsize + vx] == sid) {
+					vram[vy * ctl->xsize + vx] = buf[by * sht->bxsize + bx];
+				}
+			}
+		}
+	}
+	return;
+}
+
 void sheet_updown(struct SHEET *sht, int height)
 {
 	struct SHTCTL *ctl = sht->ctl;
@@ -119,78 +191,6 @@ void sheet_refresh(struct SHEET *sht, int bx0, int by0, int bx1, int by1)
 	return;
 }
 
-void sheet_refreshsub(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, int h0, int h1)
-{
-	int h, bx, by, vx, vy, bx0, by0, bx1, by1;
-	unsigned char *buf, *vram = ctl->vram, *map = ctl->map, sid;
-	struct SHEET *sht;
-
-	/* 如果refresh的范围超出了画面则修正 */
-	if (vx0 < 0) { vx0 = 0; }
-	if (vy0 < 0) { vy0 = 0; }
-	if (vx1 > ctl->xsize) { vx1 = ctl->xsize; }
-	if (vy1 > ctl->ysize) { vy1 = ctl->ysize; }
-	for (h = h0; h <= h1; h++) {
-		sht = ctl->sheets[h];
-		buf = sht->buf;
-		sid = sht - ctl->sheets0;
-
-		/* 使用vx0～vy1，对bx0～by1进行倒推 */
-		bx0 = vx0 - sht->vx0;
-		by0 = vy0 - sht->vy0;
-		bx1 = vx1 - sht->vx0;
-		by1 = vy1 - sht->vy0;
-		if (bx0 < 0) { bx0 = 0; } /* 处理刷新范围在图层外侧 */
-		if (by0 < 0) { by0 = 0; }
-		if (bx1 > sht->bxsize) { bx1 = sht->bxsize; } /* 应对不同的重叠方式 */
-		if (by1 > sht->bysize) { by1 = sht->bysize; }
-		for (by = by0; by < by1; by++) {
-			vy = sht->vy0 + by;
-			for (bx = bx0; bx < bx1; bx++) {
-				vx = sht->vx0 + bx;
-				if (map[vy * ctl->xsize + vx] == sid) {
-					vram[vy * ctl->xsize + vx] = buf[by * sht->bxsize + bx];
-				}
-			}
-		}
-	}
-	return;
-}
-
-void sheet_refreshmap(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, int h0)
-{
-	int h, bx, by, vx, vy, bx0, by0, bx1, by1;
-	unsigned char *buf, sid, *map = ctl->map;
-	struct SHEET *sht;
-	if (vx0 < 0) { vx0 = 0; }
-	if (vy0 < 0) { vy0 = 0; }
-	if (vx1 > ctl->xsize) { vx1 = ctl->xsize; }
-	if (vy1 > ctl->ysize) { vy1 = ctl->ysize; }
-	for (h = h0; h <= ctl->top; h++) {
-		sht = ctl->sheets[h];
-		sid = sht - ctl->sheets0; /* 将进行了减法计算的地址作为图层号码使用 */
-		buf = sht->buf;
-		bx0 = vx0 - sht->vx0;
-		by0 = vy0 - sht->vy0;
-		bx1 = vx1 - sht->vx0;
-		by1 = vy1 - sht->vy0;
-		if (bx0 < 0) { bx0 = 0; }
-		if (by0 < 0) { by0 = 0; }
-		if (bx1 > sht->bxsize) { bx1 = sht->bxsize; }
-		if (by1 > sht->bysize) { by1 = sht->bysize; }
-		for (by = by0; by < by1; by++) {
-			vy = sht->vy0 + by;
-			for (bx = bx0; bx < bx1; bx++) {
-				vx = sht->vx0 + bx;
-				if (buf[by * sht->bxsize + bx] != sht->col_inv) {
-					map[vy * ctl->xsize + vx] = sid;
-				}
-			}
-		}
-	}
-	return;
-}
-
 void sheet_slide(struct SHEET *sht, int vx0, int vy0)
 {
 	struct SHTCTL *ctl = sht->ctl;