diff --git a/README.md b/README.md
index b3416d9..b65079d 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,12 @@ If you enjoy this project, then come say hi here:
 
 ## Installation and usage
 
+### Definitions
+
+Part - A list of svg elements that make up a part
+
+Design - A list of Parts that make up a final output
+
 *TODO :)*
 
 ## Project structure
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..c7cada7
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,3 @@
+svgutils
+cairosvg
+toml
\ No newline at end of file
diff --git a/src/main.py b/src/main.py
index efa51d6..702ae64 100644
--- a/src/main.py
+++ b/src/main.py
@@ -4,28 +4,28 @@ import toml, os
 
 CONFIG["svg.file_path"] = "../assets/"
 
-with open("../definitions.toml", "r") as def_file:
+with open("../definitions.toml", "r") as def_file: #Load the part definitions
   definitions = toml.loads(def_file.read())
-with open("../designs.toml", "r") as design_file:
+with open("../designs.toml", "r") as design_file: #Load the user designs
   designs = toml.loads(design_file.read())
-with open("../config.toml", "r") as config_file:
+with open("../config.toml", "r") as config_file: #Load the user config
   config = toml.loads(config_file.read())
 
 os.makedirs("../output/vector/", exist_ok=True)
 os.makedirs("../output/" + str(config["raster_size"]) + "/", exist_ok=True)
 
 for key in designs:
-  currentDesign = designs[key]
+  currentDesign = designs[key] #Select the current design which is a list of parts
   partsList = []
   for part in currentDesign:
     for url in definitions[part]:
-      partsList.append(url)
-  svg_parts = []
+      partsList.append(url) #For each part add each element to the list
+  svg_parts = [] 
   for part in partsList:
-    svg_parts.append(SVG(part))
-  Figure("128","128", *svg_parts, SVG("credits.svg")).save("../output/vector/" + key + ".svg")
+    svg_parts.append(SVG(part)) #Add each element of the list of paths to a new list as a SVG element
+  Figure("128","128", *svg_parts, SVG("credits.svg")).save("../output/vector/" + key + ".svg") #Compile all parts into an SVG
   
-  if config["raster_images"]:
+  if config["raster_images"]: #Create png of designated size
     svg2png(
       url="../output/vector/" + key + ".svg", 
       write_to="../output/" + str(config["raster_size"]) + "/" + key + ".png", output_width=config["raster_size"]