diff --git a/examples/basic/gfx.gif b/examples/basic/gfx.gif
index b98b169..61999f1 100644
Binary files a/examples/basic/gfx.gif and b/examples/basic/gfx.gif differ
diff --git a/src/mapedit/constants.rs b/src/mapedit/constants.rs
index 7a55fce..2f86435 100644
--- a/src/mapedit/constants.rs
+++ b/src/mapedit/constants.rs
@@ -18,12 +18,20 @@ pub const TILE_BUT_CREATE: u16 = 0x7213;
 
 pub const BUT_SAVE: usize = 0;
 pub const BUT_CREATE: usize = 1;
+
 pub const BUT_LAYER1: usize = 3;
 pub const BUT_LAYER2: usize = 4;
 pub const BUT_LAYER3: usize = 5;
 pub const BUT_LAYERS: usize = 6;
+
 pub const BUT_SHIFT_LEFT: usize = 8;
 pub const BUT_SHIFT_RIGHT: usize = 9;
 pub const BUT_SHIFT_UP: usize = 10;
 pub const BUT_SHIFT_DOWN: usize = 11;
-pub const BUT_EXIT: usize = 13;
+
+pub const BUT_REDUCE_HORIZONTAL: usize = 13;
+pub const BUT_ENLARGE_HORIZONTAL: usize = 14;
+pub const BUT_REDUCE_VERTICAL: usize = 15;
+pub const BUT_ENLARGE_VERTICAL: usize = 16;
+
+pub const BUT_EXIT: usize = 18;
diff --git a/src/mapedit/mod.rs b/src/mapedit/mod.rs
index d9731c4..342405e 100644
--- a/src/mapedit/mod.rs
+++ b/src/mapedit/mod.rs
@@ -252,6 +252,38 @@ pub(crate) fn run_mapedit() {
 				    stuff.gsa1.bg[1].shift_down();
 				    stuff.gsa1.bg[2].shift_down();				    
 				}
+				BUT_REDUCE_HORIZONTAL => {
+				    if stuff.gsa1.bg[0].size.x > 1 {
+					stuff.gsa1.bg[0].size.x -= 1;
+					stuff.gsa1.bg[1].size.x -= 1;
+					stuff.gsa1.bg[2].size.x -= 1;
+					stuff.update_status_bar();
+				    }
+				}
+				BUT_ENLARGE_HORIZONTAL => {
+				    if stuff.gsa1.bg[0].size.x <= BACKGROUND_MAX_SIZE as i32 - 1 {
+					stuff.gsa1.bg[0].size.x += 1;
+					stuff.gsa1.bg[1].size.x += 1;
+					stuff.gsa1.bg[2].size.x += 1;
+					stuff.update_status_bar();
+				    }
+				}
+				BUT_REDUCE_VERTICAL => {
+				    if stuff.gsa1.bg[0].size.y > 1 {
+					stuff.gsa1.bg[0].size.y -= 1;
+					stuff.gsa1.bg[1].size.y -= 1;
+					stuff.gsa1.bg[2].size.y -= 1;
+					stuff.update_status_bar();
+				    }
+				}
+				BUT_ENLARGE_VERTICAL => {
+				    if stuff.gsa1.bg[0].size.y <= BACKGROUND_MAX_SIZE as i32 - 1 {
+					stuff.gsa1.bg[0].size.y += 1;
+					stuff.gsa1.bg[1].size.y += 1;
+					stuff.gsa1.bg[2].size.y += 1;
+					stuff.update_status_bar();
+				    }
+				}
                                 BUT_EXIT => {
                                     println!("exit");
                                     *control_flow = ControlFlow::Exit;
diff --git a/src/mapedit/stuff.rs b/src/mapedit/stuff.rs
index 4cbf2b6..fdacd09 100644
--- a/src/mapedit/stuff.rs
+++ b/src/mapedit/stuff.rs
@@ -80,6 +80,11 @@ impl Stuff {
 	self.gsa2.bg[2].tiles[0][BUT_SHIFT_UP] = 0x7316;
 	self.gsa2.bg[2].tiles[0][BUT_SHIFT_DOWN] = 0x7317;
 
+	self.gsa2.bg[2].tiles[0][BUT_REDUCE_HORIZONTAL] = 0x7414;
+	self.gsa2.bg[2].tiles[0][BUT_ENLARGE_HORIZONTAL] = 0x7415;
+	self.gsa2.bg[2].tiles[0][BUT_REDUCE_VERTICAL] = 0x7416;
+	self.gsa2.bg[2].tiles[0][BUT_ENLARGE_VERTICAL] = 0x7417;
+
         self.gsa2.bg[2].size = IVec2 { x: 120, y: 68 }; //enough to cover 4k monitors? <_<
         self.gsa2.bg[3].size = IVec2 { x: 240, y: 136 };