diff --git a/IV/layer2img.py b/IV/layer2img.py
index f8697b3..230b595 100644
--- a/IV/layer2img.py
+++ b/IV/layer2img.py
@@ -3,21 +3,18 @@ import argparse
 import geopandas
 import psycopg2
 import matplotlib.pyplot as plt
-
 from matplotlib import rc
 
-# CMAP = 'Set3'  # is nice too
-CMAP = 'tab20c'
-
-BOUNDS = ('xmin', 'ymin', 'xmax', 'ymax')
+CMAP = 'tab20c'  # 'Set3'  # is nice too
 PSQL_CREDS = "host=127.0.0.1 dbname=osm user=osm password=osm"
-
 COLORS = {
     'black': '#000000',
     'green': '#1b9e77',
     'orange': '#d95f02',
     'purple': '#7570b3',
 }
+# see `NOTICE` in the LaTeX document; this is the width of the main text block.
+TEXTWIDTH_CM = 12.12364
 
 
 def color(string):
@@ -26,10 +23,6 @@ def color(string):
     return COLORS[string]
 
 
-# see `NOTICE` in the LaTeX document; this is the width of the main text block.
-TEXTWIDTH_CM = 12.12364
-
-
 def inch(cm):
     return cm / 2.54