diff --git a/examples/read-write.rs b/examples/read-write.rs
index 2c5a73c..1f786b1 100644
--- a/examples/read-write.rs
+++ b/examples/read-write.rs
@@ -1,28 +1,11 @@
 use std::assert_eq;
 
-use c3dio::file_formats::Sto;
-use c3dio::file_formats::Trc;
 use c3dio::prelude::*;
 
 fn main() {
     let c3d = C3d::load("tests/c3d_org_samples/sample_30/admarche2.c3d").unwrap();
 
-    //    Sto::from_c3d(&c3d).write("examples/short-copy2.sto").unwrap();
     let c3d = c3d.write("examples/short-copy.c3d").unwrap();
     let c3d2 = C3d::load("examples/short-copy.c3d").unwrap();
-    // let c3d2 = C3d::load("tests/c3d_org_samples/sample_01/Eb015pr.c3d").unwrap();
     assert_eq!(c3d, c3d2);
-    dbg!(c3d.points.descriptions);
-    dbg!(c3d2.points.descriptions);
-    // assert_eq!(c3d.points.size(), c3d2.points.size());
-    // for i in 0..c3d.points.size().0 {
-    //     for j in 0..c3d.points.size().1 {
-    //         if c3d.points[i][j] != c3d2.points[i][j] {
-    //             dbg!(i, j);
-    //             dbg!(c3d.points[i][j]);
-    //             dbg!(c3d2.points[i][j]);
-    //             dbg!(c3d2.points.scale_factor);
-    //         }
-    //     }
-    // }
 }
diff --git a/examples/short-copy.c3d b/examples/short-copy.c3d
deleted file mode 100644
index 0344a00..0000000
Binary files a/examples/short-copy.c3d and /dev/null differ
diff --git a/src/file_formats/mod.rs b/src/file_formats/mod.rs
index 9e41d04..042d40d 100644
--- a/src/file_formats/mod.rs
+++ b/src/file_formats/mod.rs
@@ -1,33 +1,5 @@
 //! Structures to represent auxiliary data types that C3D files can be written to.
-use crate::data::MarkerPoint;
-use grid::Grid;
-use std::path::PathBuf;
 
 pub mod trc;
-
-#[derive(Debug, Clone)]
-pub struct Trc {
-    pub path_file_type: u8,
-    pub path_file_type_description: String,
-    pub file_name: Option<PathBuf>,
-    pub data_rate: f32,
-    pub camera_rate: f32,
-    pub num_frames: usize,
-    pub units: [char; 4],
-    pub marker_names: Vec<String>,
-    pub first_frame: usize,
-    pub data: Grid<MarkerPoint>,
-}
-
 pub mod sto;
 
-#[derive(Debug, Clone)]
-pub struct Sto {
-    pub file_description: Option<String>,
-    pub version: u8,
-    pub in_degrees: bool,
-    pub first_frame: usize,
-    pub data_rate: f32,
-    pub column_names: Vec<String>,
-    pub data: Grid<f64>,
-}