diff --git a/src/amdgpu_stats/interface.py b/src/amdgpu_stats/interface.py
index b9f6823..13601cc 100644
--- a/src/amdgpu_stats/interface.py
+++ b/src/amdgpu_stats/interface.py
@@ -1,4 +1,19 @@
-from .utils import CARD, SRC_FILES, TEMP_FILES, format_frequency, read_stat
+"""
+interface.py
+
+This module provides the TUI aspect of 'amdgpu-stats'
+
+Classes:
+    - GPUStats: the object for the _Application_, instantiated at runtime
+    - GPUStatsWidget: the primary container for the three stat widgets:
+        - MiscDisplay
+        - ClockDisplay
+        - PowerDisplay
+    - LogScreen: Second screen with the logging widget, header, and footer
+
+Functions:
+    - tui: Renders the TUI using the classes above
+"""
 import sys
 
 from textual.binding import Binding
@@ -8,6 +23,8 @@ from textual.reactive import reactive
 from textual.screen import Screen
 from textual.widgets import Header, Footer, Static, TextLog, Label
 
+from .utils import CARD, SRC_FILES, TEMP_FILES, format_frequency, read_stat
+
 
 class LogScreen(Screen):
     """Creates a screen for the logging widget"""
@@ -209,10 +226,14 @@ class ClockDisplay(Static):
         """Called when the clocks attribute changes
          - Updates label values
          - Casting inputs to string to avoid type problems w/ int/None"""
-        self.query_one("#clk_core_val", Static).update(f"{core_vals['sclk']}")
-        self.query_one("#util_pct", Static).update(f"{core_vals['util_pct']}%")
-        self.query_one("#clk_voltage_val", Static).update(f"{core_vals['voltage']}V")
-        self.query_one("#clk_memory_val", Static).update(f"{core_vals['mclk']}")
+        self.query_one("#clk_core_val",
+                       Static).update(f"{core_vals['sclk']}")
+        self.query_one("#util_pct",
+                       Static).update(f"{core_vals['util_pct']}%")
+        self.query_one("#clk_voltage_val",
+                       Static).update(f"{core_vals['voltage']}V")
+        self.query_one("#clk_memory_val",
+                       Static).update(f"{core_vals['mclk']}")
 
 
 class PowerDisplay(Static):
@@ -261,10 +282,14 @@ class PowerDisplay(Static):
         """Called when the micro_watts attributes change.
          - Updates label values
          - Casting inputs to string to avoid type problems w/ int/None"""
-        self.query_one("#pwr_avg_val", Static).update(f"{micro_watts['average']}W")
-        self.query_one("#pwr_lim_val", Static).update(f"{micro_watts['limit']}W")
-        self.query_one("#pwr_def_val", Static).update(f"{micro_watts['default']}W")
-        self.query_one("#pwr_cap_val", Static).update(f"{micro_watts['capability']}W")
+        self.query_one("#pwr_avg_val",
+                       Static).update(f"{micro_watts['average']}W")
+        self.query_one("#pwr_lim_val",
+                       Static).update(f"{micro_watts['limit']}W")
+        self.query_one("#pwr_def_val",
+                       Static).update(f"{micro_watts['default']}W")
+        self.query_one("#pwr_cap_val",
+                       Static).update(f"{micro_watts['capability']}W")
 
 
 def tui() -> None:
diff --git a/src/amdgpu_stats/utils.py b/src/amdgpu_stats/utils.py
index f66efb8..788a5fc 100644
--- a/src/amdgpu_stats/utils.py
+++ b/src/amdgpu_stats/utils.py
@@ -1,3 +1,14 @@
+"""
+utils.py
+
+This module contains utility functions/variables used throughout 'amdgpu-stats'
+
+Variables:
+    - CARD: the identifier for the discovered AMD GPU, ie: `card0` / `card1`
+    - hwmon_dir: the `hwmon` interface (dir) that provides stats for this card
+    - SRC_FILES: dictionary of the known stats from the items in `hwmon_dir`
+    - TEMP_FILES: dictionary of the *discovered* temperature nodes / stat files
+"""
 from os import path
 import glob
 from typing import Tuple, Optional