diff --git a/src/main.rs b/src/main.rs
index 32fb56a..3fd96eb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,7 +1,10 @@
 use image::{ImageBuffer, Rgb};
 use rayon::prelude::*;
 
-// Image size.
+// Number of frames to generate.
+const FRAMES = 200;
+
+// Frame size.
 const IMGW: u32 = 1024;
 const IMGH: u32 = 1024;
 
@@ -10,6 +13,10 @@ const MAXITER: u32 = IMGW;
 const MAXITER_F64: f64 = MAXITER as f64;
 const ESCRAD: f64 = 2.4;
 
+// Target coordinates (what to "zoom in on" with each new frame.)
+const TARGX = -0.4638686756;
+const TARGX = 0.0723647;
+
 fn main() {
     let w = IMGW as f64;
     let h = IMGH as f64;
@@ -19,12 +26,9 @@ fn main() {
     let mut xmin: f64 = -1.0;
     let mut ymin: f64 = -1.0;
 
-    let target_x = -0.4638686756;
-    let target_y = 0.0723647;
-
     let zoom_factor = 1.2;
 
-    for i in 1..200 {
+    for i in 1..FRAMES {
         let pxs: Vec<u8> = (0..IMGH)
             .into_par_iter()
             .flat_map(|y| {
@@ -50,8 +54,8 @@ fn main() {
         println!("#{i} done.");
 
         // Adjust bounds for the next zoom level
-        xmin = target_x - width / 2.0;
-        ymin = target_y - width / 2.0;
+        xmin = TARGX - width / 2.0;
+        ymin = TARGY - width / 2.0;
         width /= zoom_factor; // Zoom in by reducing width
     }
 }
@@ -79,6 +83,7 @@ fn col_map(iter: u32) -> [u8; 3] {
     if iter == MAXITER {
         [0, 0, 0] // Black for points that never escape.
     } else {
+        // TODO: Fancy colors.
         let t = iter as f64 / MAXITER_F64;
         let c = (t * MAXITER_F64) as u8;
         [c, c, c]