diff --git a/src/camera.rs b/src/camera.rs
index 757f4f5..c654d66 100644
--- a/src/camera.rs
+++ b/src/camera.rs
@@ -27,7 +27,7 @@ pub struct Camera {
     defocus_disk_v: Vec3,
 }
 
-// FIXME: kinda out of place in this file.
+// FIXME (low priority): kinda out of place in this file.
 fn deg_to_rad(deg: f32) -> f32 {
     deg * PI / 180.
 }
diff --git a/src/main.rs b/src/main.rs
index 698be0c..ae1b3b7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -15,12 +15,12 @@ use crate::scenes::scene::Scene;
 use crate::vec3::Vec3;
 use dotenv::dotenv;
 
-// TODO: implement scene serialization
+// TODO (low priority): implement scene serialization
 fn main() {
     dotenv().ok();
     pretty_env_logger::init();
 
-    // TODO: better cli parsing || add random flag to generate random scene
+    // TODO (medium priority): better cli parsing || add random flag to generate random scene
     let mut json_file = "./scenes/scene.json";
     let args: Vec<String> = env::args().collect();
     if args.len() > 1 {
diff --git a/src/objects/circle.rs b/src/objects/circle.rs
index f2f35bd..9d55455 100644
--- a/src/objects/circle.rs
+++ b/src/objects/circle.rs
@@ -61,7 +61,7 @@ impl Hittable for Circle {
 
     fn to_uv(&self, point: &Vec3) -> Vec3 {
         let p = *point - self.center;
-        // TODO: add rotated texture support
+        // TODO (low priority): add rotated texture support
         Vec3::new(
             0.5 + p.y().atan2(*p.x()) / (2. * PI),
             1. - (p.z() / self.radius).acos() / PI,
diff --git a/src/objects/cube.rs b/src/objects/cube.rs
index 297b361..1c5129d 100644
--- a/src/objects/cube.rs
+++ b/src/objects/cube.rs
@@ -43,7 +43,7 @@ impl Hittable for Cube {
     }
 
     fn to_uv(&self, _point: &Vec3) -> Vec3 {
-        // TODO: map to [0.1] relative to specific face
+        // TODO (low priority): map to [0.1] relative to specific face
         todo!()
     }
 }
diff --git a/src/objects/hit.rs b/src/objects/hit.rs
index b2540a4..57e630e 100644
--- a/src/objects/hit.rs
+++ b/src/objects/hit.rs
@@ -80,7 +80,7 @@ impl Hit {
         (self.u, self.v)
     }
 
-    // TODO: use front_face to discard back-hits for culling
+    // TODO (low priority): use front_face to discard back-hits for culling
     pub fn hit_list(hittables: &Vec<Arc<dyn Hittable>>, r: &Ray) -> Option<Hit> {
         let mut closest: Option<Hit> = None;
         for hittable in hittables {
diff --git a/src/objects/sphere.rs b/src/objects/sphere.rs
index ebf3282..83a9f88 100644
--- a/src/objects/sphere.rs
+++ b/src/objects/sphere.rs
@@ -74,7 +74,7 @@ impl Hittable for Sphere {
 
     fn to_uv(&self, point: &Vec3) -> Vec3 {
         let p = *point - self.center;
-        // TODO: add rotated texture support
+        // TODO (medium priority): add rotated texture support
         Vec3::new(
             0.5 + p.y().atan2(*p.x()) / (2. * PI),
             1. - (p.z() / self.radius).acos() / PI,
diff --git a/src/raytracer.rs b/src/raytracer.rs
index 821c49a..9d32b1c 100644
--- a/src/raytracer.rs
+++ b/src/raytracer.rs
@@ -26,7 +26,7 @@ pub fn write_image(filename: &str, pixels: &[u8], width: u32, height: u32) {
 pub fn render(scene: &mut Scene) {
     scene.init();
 
-    // TODO: currently splits per vertical line, but could be more granular (per chunk)
+    // TODO (low priority): currently splits per vertical line, but could be more granular (per chunk)
     let mut pixels = vec![0_u8; (scene.get_image_width() * scene.get_image_height() * 3) as usize];
     let scanlines: Vec<(usize, &mut [u8])> = pixels
         .chunks_mut(scene.get_image_width() as usize * 3)
diff --git a/src/scenes/scene.rs b/src/scenes/scene.rs
index ecf48d2..5303e31 100644
--- a/src/scenes/scene.rs
+++ b/src/scenes/scene.rs
@@ -28,7 +28,7 @@ pub struct Scene {
     image_width: u32,
     image_height: u32,
 
-    // raytracing // TODO: think about organisation of these vars, also in Camera
+    // raytracing 
     max_depth: u32,
 }