diff --git a/crates/app/src/main.rs b/crates/app/src/main.rs
index d5a260c..ffd7271 100644
--- a/crates/app/src/main.rs
+++ b/crates/app/src/main.rs
@@ -27,7 +27,7 @@ enum Commands {
     },
     Dev {
         #[command(subcommand)]
-        dev_command: DevCommands,
+        command: DevCommands,
     },
 }
 
@@ -50,7 +50,9 @@ fn main() {
             machine.feed(ir);
             machine.eval_full();
         }
-        Commands::Dev { dev_command } => dev_command.run(),
+        Commands::Dev {
+            command: dev_command,
+        } => dev_command.run(),
     }
 }
 
diff --git a/crates/prowocessing/src/experimental/trait_based/data.rs b/crates/prowocessing/src/experimental/trait_based/data.rs
index 51ec597..e3dd671 100644
--- a/crates/prowocessing/src/experimental/trait_based/data.rs
+++ b/crates/prowocessing/src/experimental/trait_based/data.rs
@@ -1,7 +1,5 @@
 //! Definitions of the data transfer and storage types.
 
-/// Types for element and pipeline IO
 pub mod io;
 
-/// Raw data types contained in `io`
 pub mod raw;
diff --git a/crates/prowocessing/src/experimental/trait_based/data/io.rs b/crates/prowocessing/src/experimental/trait_based/data/io.rs
index 849f955..d091621 100644
--- a/crates/prowocessing/src/experimental/trait_based/data/io.rs
+++ b/crates/prowocessing/src/experimental/trait_based/data/io.rs
@@ -1,22 +1,26 @@
-use super::raw::{Data, OwnedData};
+//! Types for element and pipeline IO
+
+use std::convert::Into;
+
+use super::raw::{Data, DataRef};
 
 /// Newtype struct with borrowed types for pipeline/element inputs, so that doesn't force a move or clone
-pub struct Inputs<'a>(Vec<Data<'a>>);
+pub struct Inputs<'a>(Vec<DataRef<'a>>);
 
 impl<'a> Inputs<'a> {
     /// get inner value(s)
-    pub(crate) fn inner(&self) -> Vec<Data<'a>> {
+    pub(crate) fn inner(&self) -> Vec<DataRef<'a>> {
         self.0.clone()
     }
 }
 
-impl<'a> From<Vec<Data<'a>>> for Inputs<'a> {
-    fn from(value: Vec<Data<'a>>) -> Self {
+impl<'a> From<Vec<DataRef<'a>>> for Inputs<'a> {
+    fn from(value: Vec<DataRef<'a>>) -> Self {
         Self(value)
     }
 }
 
-impl<'a, T: Into<Data<'a>>> From<T> for Inputs<'a> {
+impl<'a, T: Into<DataRef<'a>>> From<T> for Inputs<'a> {
     fn from(value: T) -> Self {
         Self(vec![value.into()])
     }
@@ -24,25 +28,25 @@ impl<'a, T: Into<Data<'a>>> From<T> for Inputs<'a> {
 
 impl<'a> From<&'a Outputs> for Inputs<'a> {
     fn from(value: &'a Outputs) -> Self {
-        Self(value.0.iter().map(std::convert::Into::into).collect())
+        Self(value.0.iter().map(Into::into).collect())
     }
 }
 
-/// Newtype struct around `OwnedData` for pipeline/element outputs
-pub struct Outputs(Vec<OwnedData>);
+/// Used for pipeline/element outputs
+pub struct Outputs(Vec<Data>);
 
 impl Outputs {
     /// consume self and return inner value(s)
-    pub fn into_inner(self) -> Vec<OwnedData> {
+    pub fn into_inner(self) -> Vec<Data> {
         self.0
     }
 }
-impl From<Vec<OwnedData>> for Outputs {
-    fn from(value: Vec<OwnedData>) -> Self {
+impl From<Vec<Data>> for Outputs {
+    fn from(value: Vec<Data>) -> Self {
         Self(value)
     }
 }
-impl<T: Into<OwnedData>> From<T> for Outputs {
+impl<T: Into<Data>> From<T> for Outputs {
     fn from(value: T) -> Self {
         Self(vec![value.into()])
     }
@@ -53,7 +57,7 @@ impl From<Inputs<'_>> for Outputs {
             value
                 .0
                 .into_iter()
-                .map(|i: Data<'_>| Data::to_owned_data(&i))
+                .map(|i: DataRef<'_>| DataRef::to_owned_data(&i))
                 .collect(),
         )
     }
diff --git a/crates/prowocessing/src/experimental/trait_based/data/raw.rs b/crates/prowocessing/src/experimental/trait_based/data/raw.rs
index e028474..acc75c1 100644
--- a/crates/prowocessing/src/experimental/trait_based/data/raw.rs
+++ b/crates/prowocessing/src/experimental/trait_based/data/raw.rs
@@ -1,58 +1,58 @@
-//! Dynamic data storage and transfer types
+//! Dynamic data storage and transfer types for use in [`io`]
 
 /// Owned data type, for use mostly in outputs and storage
 #[derive(Clone, Debug)]
-pub enum OwnedData {
+pub enum Data {
     String(String),
     Int(i32),
 }
 
-impl From<String> for OwnedData {
+impl From<String> for Data {
     fn from(value: String) -> Self {
         Self::String(value)
     }
 }
 
-impl From<i32> for OwnedData {
+impl From<i32> for Data {
     fn from(value: i32) -> Self {
         Self::Int(value)
     }
 }
 
 /// Unowned data type, for inputs into runner functions
-#[derive(Clone, Copy)]
-pub enum Data<'a> {
+#[derive(Clone, Copy, Debug)]
+pub enum DataRef<'a> {
     String(&'a str),
     Int(i32),
 }
 
-impl Data<'_> {
+impl DataRef<'_> {
     /// converts itself to `OwnedData`
-    pub fn to_owned_data(&self) -> OwnedData {
+    pub fn to_owned_data(&self) -> Data {
         match self {
-            Data::String(s) => (*s).to_owned().into(),
-            Data::Int(i) => (*i).into(),
+            DataRef::String(s) => (*s).to_owned().into(),
+            DataRef::Int(i) => (*i).into(),
         }
     }
 }
 
-impl<'a> From<&'a str> for Data<'a> {
+impl<'a> From<&'a str> for DataRef<'a> {
     fn from(value: &'a str) -> Self {
         Self::String(value)
     }
 }
 
-impl From<i32> for Data<'_> {
+impl From<i32> for DataRef<'_> {
     fn from(value: i32) -> Self {
         Self::Int(value)
     }
 }
 
-impl<'a> From<&'a OwnedData> for Data<'a> {
-    fn from(value: &'a OwnedData) -> Self {
+impl<'a> From<&'a Data> for DataRef<'a> {
+    fn from(value: &'a Data) -> Self {
         match value {
-            OwnedData::String(s) => Data::String(s),
-            OwnedData::Int(i) => Data::Int(*i),
+            Data::String(s) => DataRef::String(s),
+            Data::Int(i) => DataRef::Int(*i),
         }
     }
 }
diff --git a/crates/prowocessing/src/experimental/trait_based/ops/num.rs b/crates/prowocessing/src/experimental/trait_based/ops/num.rs
index 0b2a295..09b4372 100644
--- a/crates/prowocessing/src/experimental/trait_based/ops/num.rs
+++ b/crates/prowocessing/src/experimental/trait_based/ops/num.rs
@@ -4,7 +4,7 @@ use core::panic;
 use crate::experimental::trait_based::{
     data::{
         io::{Inputs, Outputs},
-        raw::Data,
+        raw::DataRef,
     },
     element::{DataType, ElementSignature, PipelineElement},
 };
@@ -14,7 +14,7 @@ pub struct Add(pub i32);
 impl PipelineElement for Add {
     fn runner(&self) -> fn(&Inputs) -> Outputs {
         |input| {
-            if let [Data::Int(i0), Data::Int(i1), ..] = input.inner()[..] {
+            if let [DataRef::Int(i0), DataRef::Int(i1), ..] = input.inner()[..] {
                 (i0 + i1).into()
             } else {
                 panic!("Invalid data passed")
@@ -35,7 +35,7 @@ pub struct Subtract(pub i32);
 impl PipelineElement for Subtract {
     fn runner(&self) -> fn(&Inputs) -> Outputs {
         |input| {
-            if let [Data::Int(i0), Data::Int(i1), ..] = input.inner()[..] {
+            if let [DataRef::Int(i0), DataRef::Int(i1), ..] = input.inner()[..] {
                 (i0 + i1).into()
             } else {
                 panic!("Invalid data passed")
@@ -56,7 +56,7 @@ pub struct Stringify;
 impl PipelineElement for Stringify {
     fn runner(&self) -> fn(&Inputs) -> Outputs {
         |input| {
-            if let [Data::Int(int), ..] = input.inner()[..] {
+            if let [DataRef::Int(int), ..] = input.inner()[..] {
                 int.to_string().into()
             } else {
                 panic!("Invalid data passed")
diff --git a/crates/prowocessing/src/experimental/trait_based/ops/str.rs b/crates/prowocessing/src/experimental/trait_based/ops/str.rs
index 38fe992..dc0d99d 100644
--- a/crates/prowocessing/src/experimental/trait_based/ops/str.rs
+++ b/crates/prowocessing/src/experimental/trait_based/ops/str.rs
@@ -2,7 +2,7 @@
 use crate::experimental::trait_based::{
     data::{
         io::{Inputs, Outputs},
-        raw::Data,
+        raw::DataRef,
     },
     element::{DataType, ElementSignature, PipelineElement},
 };
@@ -12,7 +12,7 @@ pub struct Concatenate(pub String);
 impl PipelineElement for Concatenate {
     fn runner(&self) -> fn(&Inputs) -> Outputs {
         |input| {
-            if let [Data::String(s0), Data::String(s1), ..] = input.inner()[..] {
+            if let [DataRef::String(s0), DataRef::String(s1), ..] = input.inner()[..] {
                 format!("{s0}{s1}").into()
             } else {
                 panic!("Invalid data passed")
@@ -33,7 +33,7 @@ pub struct Upper;
 impl PipelineElement for Upper {
     fn runner(&self) -> fn(&Inputs) -> Outputs {
         |input| {
-            if let [Data::String(s), ..] = input.inner()[..] {
+            if let [DataRef::String(s), ..] = input.inner()[..] {
                 s.to_uppercase().into()
             } else {
                 panic!("Invalid data passed")
@@ -54,7 +54,7 @@ pub struct Lower;
 impl PipelineElement for Lower {
     fn runner(&self) -> fn(&Inputs) -> Outputs {
         |input| {
-            if let [Data::String(s), ..] = input.inner()[..] {
+            if let [DataRef::String(s), ..] = input.inner()[..] {
                 s.to_lowercase().into()
             } else {
                 panic!("Invalid data passed")