diff --git a/src/main/scala/com/htmlism/mos6502/dsl/BitField.scala b/src/main/scala/com/htmlism/mos6502/dsl/BitField.scala
index 7433938..6303346 100644
--- a/src/main/scala/com/htmlism/mos6502/dsl/BitField.scala
+++ b/src/main/scala/com/htmlism/mos6502/dsl/BitField.scala
@@ -3,7 +3,7 @@ package com.htmlism.mos6502.dsl
 import cats.data.NonEmptyList
 
 trait BitField[A] {
-  def comment: String
+  def definitionGroupComment: String
 
   /**
     * An ordered list of every status in this bit field
diff --git a/src/main/scala/com/htmlism/mos6502/dsl/Mapping.scala b/src/main/scala/com/htmlism/mos6502/dsl/Mapping.scala
index 535aaaf..3765844 100644
--- a/src/main/scala/com/htmlism/mos6502/dsl/Mapping.scala
+++ b/src/main/scala/com/htmlism/mos6502/dsl/Mapping.scala
@@ -6,7 +6,7 @@ import cats.data.NonEmptyList
   * Like an enum, but values are specified
   */
 trait Mapping[A] {
-  def comment: String
+  def definitionGroupComment: String
 
   /**
     * An ordered list of every value in this enumeration
diff --git a/src/main/scala/com/htmlism/mos6502/dsl/syntax/AsmDocSyntax.scala b/src/main/scala/com/htmlism/mos6502/dsl/syntax/AsmDocSyntax.scala
index f8f774c..cb7b69e 100644
--- a/src/main/scala/com/htmlism/mos6502/dsl/syntax/AsmDocSyntax.scala
+++ b/src/main/scala/com/htmlism/mos6502/dsl/syntax/AsmDocSyntax.scala
@@ -58,7 +58,7 @@ trait AsmDocSyntax {
 
     val grp =
       DefinitionGroup(
-        ev.comment,
+        ev.definitionGroupComment,
         xs
           .map {
             case (s, n) =>
@@ -78,7 +78,7 @@ trait AsmDocSyntax {
 
     val grp =
       DefinitionGroup(
-        ev.comment,
+        ev.definitionGroupComment,
         xs
           .map {
             case (s, n) =>
diff --git a/src/test/scala/com/htmlism/mos6502/dsl/DslSpec.scala b/src/test/scala/com/htmlism/mos6502/dsl/DslSpec.scala
index f25095d..b3b521e 100644
--- a/src/test/scala/com/htmlism/mos6502/dsl/DslSpec.scala
+++ b/src/test/scala/com/htmlism/mos6502/dsl/DslSpec.scala
@@ -180,7 +180,7 @@ case object Right extends TestDirection
 object TestDirection {
   implicit val bitFieldDirection: BitField[TestDirection] =
     new BitField[TestDirection] {
-      def comment: String =
+      def definitionGroupComment: String =
         "foo as bit field"
 
       def all: NonEmptyList[TestDirection] =
@@ -195,7 +195,7 @@ object TestDirection {
 
   implicit val mappingDirection: Mapping[TestDirection] =
     new Mapping[TestDirection] {
-      def comment: String =
+      def definitionGroupComment: String =
         "foo as a mapping"
 
       def all: NonEmptyList[TestDirection] =
diff --git a/src/test/scala/com/htmlism/mos6502/dsl/snake/AsciiValue.scala b/src/test/scala/com/htmlism/mos6502/dsl/snake/AsciiValue.scala
index fd58e0f..c4dcfc4 100644
--- a/src/test/scala/com/htmlism/mos6502/dsl/snake/AsciiValue.scala
+++ b/src/test/scala/com/htmlism/mos6502/dsl/snake/AsciiValue.scala
@@ -6,8 +6,8 @@ import cats.data.NonEmptyList
 object AsciiValue {
   implicit val asciiValueMapping: Mapping[AsciiValue] =
     new Mapping[AsciiValue] {
-      def comment: String =
-        "foo as a mapping"
+      def definitionGroupComment: String =
+        "ASCII values of keys controlling the snake"
 
       def all: NonEmptyList[AsciiValue] =
         NonEmptyList.of(AsciiW, AsciiA, AsciiS, AsciiD)
diff --git a/src/test/scala/com/htmlism/mos6502/dsl/snake/Direction.scala b/src/test/scala/com/htmlism/mos6502/dsl/snake/Direction.scala
index 330763b..dfb9ca8 100644
--- a/src/test/scala/com/htmlism/mos6502/dsl/snake/Direction.scala
+++ b/src/test/scala/com/htmlism/mos6502/dsl/snake/Direction.scala
@@ -6,8 +6,8 @@ import cats.data.NonEmptyList
 object Direction {
   implicit val directionBitField: BitField[Direction] =
     new BitField[Direction] {
-      def comment: String =
-        "foo as bit field"
+      def definitionGroupComment: String =
+        "Directions"
 
       def all: NonEmptyList[Direction] =
         NonEmptyList.of(Up, Down, Left, Right)
diff --git a/src/test/scala/com/htmlism/mos6502/dsl/snake/Easy6502Spec.scala b/src/test/scala/com/htmlism/mos6502/dsl/snake/Easy6502Spec.scala
index 3d3a522..2d2a7cb 100644
--- a/src/test/scala/com/htmlism/mos6502/dsl/snake/Easy6502Spec.scala
+++ b/src/test/scala/com/htmlism/mos6502/dsl/snake/Easy6502Spec.scala
@@ -77,6 +77,8 @@ class Easy6502Spec extends AnyFlatSpec with should.Matchers {
     val initSnake =
       sub("initSnake") { implicit a =>
         snakeDirection.write(Right)
+
+        snakeLength.read
       }
 
     val generateApplePosition =