diff --git a/common/src/sim_config.rs b/common/src/sim_config.rs
index d81a23a4..cb8c0d83 100644
--- a/common/src/sim_config.rs
+++ b/common/src/sim_config.rs
@@ -36,10 +36,14 @@ pub struct SimConfigRaw {
 pub struct SimConfig {
     /// Amount of time between each step. Inverse of the rate
     pub step_interval: Duration,
+    /// Maximum distance at which anything can be seen in absolute units
     pub view_distance: f32,
     pub input_queue_size: Duration,
+    /// Whether gameplay-like restrictions exist, such as limited inventory
     pub gameplay_enabled: bool,
+    /// Number of voxels along the edge of a chunk
     pub chunk_size: u8,
+    /// Static configuration information relevant to character physics
     pub character: CharacterConfig,
     /// Scaling factor converting meters to absolute units
     pub meters_to_absolute: f32,
@@ -93,28 +97,41 @@ pub struct CharacterConfigRaw {
     pub air_resistance: Option<f32>,
     /// How fast the player jumps off the ground in m/s
     pub jump_speed: Option<f32>,
-    /// How far away the player needs to be from the ground in meters to be considered in the air
+    /// How far away the player needs to be from the ground in meters to be considered in the air in meters
     pub ground_distance_tolerance: Option<f32>,
     /// Radius of the character in meters
     pub character_radius: Option<f32>,
-    /// How far a character can reach when placing blocks
+    /// How far a character can reach when placing blocks in meters
     pub block_reach: Option<f32>,
 }
 
-/// Static configuration information relevant to character physics
+/// Static configuration information relevant to character physics. Most fields are based on
+/// absolute units and seconds.
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct CharacterConfig {
+    /// Character movement speed in units/s during no-clip
     pub no_clip_movement_speed: f32,
+    /// Character maximumum movement speed while on the ground in units/s
     pub max_ground_speed: f32,
+    /// Character artificial speed cap to avoid overloading the server in units/s
     pub speed_cap: f32,
+    /// Maximum ground slope (0=horizontal, 1=45 degrees)
     pub max_ground_slope: f32,
+    /// Character acceleration while on the ground in units/s^2
     pub ground_acceleration: f32,
+    /// Character acceleration while in the air in units/s^2
     pub air_acceleration: f32,
+    /// Acceleration of gravity in units/s^2
     pub gravity_acceleration: f32,
+    /// Air resistance in (units/s^2) per (units/s); scales linearly with respect to speed
     pub air_resistance: f32,
+    /// How fast the player jumps off the ground in units/s
     pub jump_speed: f32,
+    /// How far away the player needs to be from the ground in meters to be considered in the air in absolute units
     pub ground_distance_tolerance: f32,
+    /// Radius of the character in absolute units
     pub character_radius: f32,
+    /// How far a character can reach when placing blocks in absolute units
     pub block_reach: f32,
 }