diff --git a/src/scripts/model_maker.py b/src/scripts/model_maker.py
index 6e2d3d50e20f538a528ba64cf1850ebda9ab21b2..7d3eeb5f80d2651a78e9395769a5d6b3d7aff8f1 100755
--- a/src/scripts/model_maker.py
+++ b/src/scripts/model_maker.py
@@ -31,6 +31,7 @@ import pdb
 import random
 import yaml
 
+## \brief 3D software generation capability flag.
 allow_3d = True
 try:
     import pyvista as pv
@@ -46,7 +47,7 @@ from sys import argv
 # `main()` is the function that handles the creation of the code configuration.
 # It returns an integer value as exit code, using 0 to signal successful execution.
 #
-# \returns result: `int` Number of detected error-level inconsistencies.
+# \returns result: `int` Exit code (0 = SUCCESS).
 def main():
     result = 0
     config = parse_arguments()
@@ -952,9 +953,10 @@ def write_legacy_sconf(conf):
 
 ## \brief Export the model to a set of OBJ files for 3D visualization.
 #
-#  This function exports the model as a set of OBJ files (one for every
-#  spherical unit, plus a single scene file) to allow for model visualization
-#  with 3D software tools.
+#  This function exports the model as a single OBJ file, containing the
+#  information to visualize the particle with 3D software tools. The model
+#  file is associated with a MTL material libray file, used to assign colors
+#  to spheres of different type.
 #
 #  \param scatterer: `dict` Scatterer configuration dictionary (gets modified)
 #  \param geometry: `dict` Geometry configuration dictionary (gets modified)