diff --git a/modeling-cmds/src/format.rs b/modeling-cmds/src/format/mod.rs
similarity index 100%
rename from modeling-cmds/src/format.rs
rename to modeling-cmds/src/format/mod.rs
diff --git a/modeling-cmds/src/format/stl.rs b/modeling-cmds/src/format/stl.rs
index 80d7a408..69a4baa5 100644
--- a/modeling-cmds/src/format/stl.rs
+++ b/modeling-cmds/src/format/stl.rs
@@ -8,57 +8,33 @@ use crate::{coord, format::Selection, units::UnitLength};
 pub mod import {
     use super::*;
 
-    /// Options for exporting STL.
-    #[derive(Clone, Debug, Eq, Hash, PartialEq, Serialize, Deserialize, JsonSchema, Display, FromStr)]
-    #[display("coords: {coords}, selection: {selection}, storage: {storage}, units: {units}")]
-    #[serde(rename = "StlExportOptions")]
+    /// Options for importing STL.
+    #[derive(
+        Clone, Debug, Eq, Hash, PartialEq, Serialize, Deserialize, JsonSchema, Display, FromStr,
+    )]
+    #[display("coords: {coords}, units: {units}")]
+    #[serde(rename = "StlImportOptions")]
     pub struct Options {
-        /// Co-ordinate system of output data.
+        /// Co-ordinate system of input data.
         ///
         /// Defaults to the [KittyCAD co-ordinate system].
         ///
         /// [KittyCAD co-ordinate system]: ../coord/constant.KITTYCAD.html
         pub coords: coord::System,
-
-        /// Export selection.
-        pub selection: Selection,
-
-        /// Export storage.
-        pub storage: Storage,
-
-        /// Export length unit.
-        ///
-        /// Defaults to meters.
-        pub units: UnitLength,
+        /// The units of the input data.
+        /// This is very important for correct scaling and when calculating physics properties like
+        /// mass, etc.
+        pub units: crate::units::UnitLength,
     }
 
     impl Default for Options {
         fn default() -> Self {
             Self {
                 coords: *coord::KITTYCAD,
-                selection: Default::default(),
-                storage: Default::default(),
                 units: UnitLength::Meters,
             }
         }
     }
-
-    /// Export storage.
-    #[derive(
-        Clone, Copy, Debug, Default, Deserialize, Display, Eq, FromStr, Hash, JsonSchema, PartialEq, Serialize,
-    )]
-    #[display(style = "snake_case")]
-    #[serde(rename = "StlStorage", rename_all = "snake_case")]
-    pub enum Storage {
-        /// Plaintext encoding.
-        Ascii,
-
-        /// Binary STL encoding.
-        ///
-        /// This is the default setting.
-        #[default]
-        Binary,
-    }
 }
 
 /// Export models in STL format.