diff --git a/c/qrcodegen-worker.c b/c/qrcodegen-worker.c
index 7ffa441..2e19485 100644
--- a/c/qrcodegen-worker.c
+++ b/c/qrcodegen-worker.c
@@ -35,9 +35,7 @@
 #include "qrcodegen.h"
 
 
-// The main application program.
 int main(void) {
-	// Start loop
 	while (true) {
 		
 		// Read data length or exit
diff --git a/python/qrcodegen-batch-test.py b/python/qrcodegen-batch-test.py
index 2b10f11..2efc964 100644
--- a/python/qrcodegen-batch-test.py
+++ b/python/qrcodegen-batch-test.py
@@ -32,10 +32,10 @@ if sys.version_info.major < 3:
 
 
 CHILD_PROGRAMS = [
-	["python", "qrcodegen-worker.py"],
-	["java", "io/nayuki/qrcodegen/QrCodeGeneratorWorker"],
-	["./qrcodegen-worker"],
-	["./QrCodeGeneratorWorker"],
+	["python", "qrcodegen-worker.py"],  # Python program
+	["java", "io/nayuki/qrcodegen/QrCodeGeneratorWorker"],  # Java program
+	["./qrcodegen-worker"],  # C program
+	["./QrCodeGeneratorWorker"],  # C++ program
 ]
 
 
diff --git a/python/qrcodegen-worker.py b/python/qrcodegen-worker.py
index 0c731cc..6dfd182 100644
--- a/python/qrcodegen-worker.py
+++ b/python/qrcodegen-worker.py
@@ -38,7 +38,6 @@ def read_int():
 
 
 def main():
-	# Start loop
 	while True:
 		
 		# Read data or exit