diff --git a/plot_lfclfc_scatter.py b/plot_lfclfc_scatter.py
index 9c17183ea5ff18c3bbc5ca27d30e4a6e377c4aab..b872063f59fa974f904245403ca76e2ba45a5c42 100755
--- a/plot_lfclfc_scatter.py
+++ b/plot_lfclfc_scatter.py
@@ -150,9 +150,21 @@ class Scatterplot:
             line_style = {
                 "linewidth": 0.5, "color": "lightblue", "linestyle": "dashed"}
             axis.axhline(y=1, **line_style)
+            axis.annotate(
+                f"y = 1", xy=(min(self.data.x)-1, 1), xycoords="data",
+                verticalalignment='bottom', size="x-small", color="lightblue")
             axis.axhline(y=-1, **line_style)
+            axis.annotate(
+                f"y = -1", xy=(min(self.data.x)-1, -1), xycoords="data",
+                verticalalignment='top', size="x-small", color="lightblue")
             axis.axvline(x=1, **line_style)
+            axis.annotate(
+                f"x = -1", xy=(-1, min(self.data.y)-1), xycoords="data",
+                horizontalalignment='right', rotation=90, size="x-small", color="lightblue")
             axis.axvline(x=-1, **line_style)
+            axis.annotate(
+                f"x = 1", xy=(1, min(self.data.y)-1), xycoords="data",
+                horizontalalignment='left', rotation=90, size="x-small", color="lightblue")
             # Number of genes beyond lfc thresholds, in each quadrant
             # up_up = 100 * len(self.data.query(
             #     f"x > 1 & y > 1")) / len(self.data)
@@ -163,34 +175,34 @@ class Scatterplot:
             # down_down = 100 * len(self.data.query(
             #     f"x < 1 & y < 1")) / len(self.data)
             up_up = len(self.data.query(
-                f"x > 1 & y > 1"))
+                "x > 1 & y > 1"))
             up_down = len(self.data.query(
-                f"x > 1 & y < 1"))
+                "x > 1 & y < -1"))
             down_up = len(self.data.query(
-                f"x < 1 & y > 1"))
+                "x < -1 & y > 1"))
             down_down = len(self.data.query(
-                f"x < 1 & y < 1"))
+                "x < -1 & y < -1"))
             # axis.text(0.9, 0.9, f"{up_up}", transform = axis.transAxes)
             # axis.text(0.9, 0.1, f"{up_down}", transform = axis.transAxes)
             # axis.text(0.1, 0.9, f"{down_up}", transform = axis.transAxes)
             # axis.text(0.1, 0.1, f"{down_down}", transform = axis.transAxes)
             axis.annotate(
-                f"{up_up}", xy=(0.95, 0.95), xycoords='axes fraction',
+                f"{up_up}", xy=(0.95, 0.95), xycoords="axes fraction",
                 size="x-small", color="lightblue",
                 horizontalalignment="right",
                 verticalalignment="top")
             axis.annotate(
-                f"{up_down}", xy=(0.95, 0.05), xycoords='axes fraction',
+                f"{up_down}", xy=(0.95, 0.05), xycoords="axes fraction",
                 size="x-small", color="lightblue",
                 horizontalalignment="right",
                 verticalalignment="bottom")
             axis.annotate(
-                f"{down_up}", xy=(0.05, 0.95), xycoords='axes fraction',
+                f"{down_up}", xy=(0.05, 0.95), xycoords="axes fraction",
                 size="x-small", color="lightblue",
                 horizontalalignment="left",
                 verticalalignment="top")
             axis.annotate(
-                f"{down_down}", xy=(0.05, 0.05), xycoords='axes fraction',
+                f"{down_down}", xy=(0.05, 0.05), xycoords="axes fraction",
                 size="x-small", color="lightblue",
                 horizontalalignment="left",
                 verticalalignment="bottom")
@@ -224,16 +236,6 @@ class Scatterplot:
             equal_axes=True, tight=True)
 
 
-#########################################################
-# For better traceability, options and global variables #
-# should be stored as class attributes                  #
-#########################################################
-# class Globals(object):
-#     """This object holds global variables."""
-#     plot_diagonal = False
-#     max_logfold = None
-
-
 def main():
     """Main function of the program."""
     print(" ".join(sys.argv))
@@ -304,39 +306,6 @@ def main():
         help="Colour to use for the elements in the list given by option "
         "--gene_list or --selector.")
     # parser.add_argument(
-    #     "--label_size",
-    #     type=int,
-    #     help="Font size for axis labels",
-    #     default=24)
-    # parser.add_argument(
-    #     "--hm_label_size",
-    #     type=int,
-    #     help="Font size for fold heatmap labels",
-    #     default=9)
-    # parser.add_argument(
-    #     "--legend_size",
-    #     type=int,
-    #     help="Font size for legend labels",
-    #     default=9)
-    # parser.add_argument(
-    #     "--marker_size",
-    #     type=int,
-    #     help="Size for markers on the plot",
-    #     default=4)
-    # parser.add_argument(
-    #     "--tick_size",
-    #     type=int,
-    #     help="Font size for ticks",
-    #     default=18)
-    # parser.add_argument(
-    #     "-x", "--x_axis",
-    #     help="Label for the x axis of the plot.",
-    #     required=True)
-    # parser.add_argument(
-    #     "-y", "--y_axis",
-    #     help="Label for the y axis of the plot.",
-    #     required=True)
-    # parser.add_argument(
     #     "-t", "--transform",
     #     help="log2, log10, or a linear scale to apply.",
     #     default=0)
@@ -347,8 +316,6 @@ def main():
     args = parser.parse_args()
     # if args.plot_diagonal:
     #     Globals.plot_diagonal = True
-    # if args.max_logfold:
-    #     Globals.max_logfold = args.max_logfold
     plot_data = Scatterplot(
         args.x_input_data,
         args.y_input_data,
@@ -365,10 +332,6 @@ def main():
     #     transform = int(args.transform)
     if args.gene_list:
         (list_name, base_gene_list) = get_gene_list(args.gene_list)
-        # with open(args.gene_list, "r") as infile:
-        #     base_gene_list = [
-        #         strip_split(line)[0] for line in infile.readlines()
-        #         if line[0] != "#"]
     else:
         base_gene_list = []
     if args.selector: