diff --git a/libraries/CurieSoftwareSerial/examples/SoftwareSerialExample/SoftwareSerialExample.ino b/libraries/CurieSoftwareSerial/examples/SoftwareSerialExample/SoftwareSerialExample.ino
index 14e88720..581f3c82 100644
--- a/libraries/CurieSoftwareSerial/examples/SoftwareSerialExample/SoftwareSerialExample.ino
+++ b/libraries/CurieSoftwareSerial/examples/SoftwareSerialExample/SoftwareSerialExample.ino
@@ -34,7 +34,7 @@ void setup()
   // Open serial communications and wait for port to open:
   Serial.begin(115200);
   while (!Serial) {
-    ; // wait for serial port to connect. Needed for Leonardo only
+    ; // wait for serial port to connect. Needed for Native USB only
   }
 
 
diff --git a/libraries/CurieTime/examples/ReadTest/ReadTest.ino b/libraries/CurieTime/examples/ReadTest/ReadTest.ino
index 4483268f..12593f73 100644
--- a/libraries/CurieTime/examples/ReadTest/ReadTest.ino
+++ b/libraries/CurieTime/examples/ReadTest/ReadTest.ino
@@ -6,8 +6,8 @@
 #include <CurieTime.h>
 
 void setup() {
-  while (!Serial);
-  Serial.begin(9600);
+  Serial.begin(9600); // initialize Serial communication
+  while (!Serial);    // wait for serial port to connect.
 
   Serial.println("CurieTime Read Test");
   Serial.println("-------------------");
diff --git a/libraries/CurieTime/examples/SetTime/SetTime.ino b/libraries/CurieTime/examples/SetTime/SetTime.ino
index 97dbefc6..42d1a611 100644
--- a/libraries/CurieTime/examples/SetTime/SetTime.ino
+++ b/libraries/CurieTime/examples/SetTime/SetTime.ino
@@ -6,8 +6,8 @@
 #include <CurieTime.h>
 
 void setup() {
-  while (!Serial);
-  Serial.begin(9600);
+  Serial.begin(9600); // initialize Serial communication
+  while(!Serial) ;    // wait for serial port to connect.
 
   // set the current time to 14:27:00, December 14th, 2015
   setTime(14, 27, 00, 14, 12, 2015);
diff --git a/libraries/CurieTimerOne/examples/CurieTimer1BlinkSpeed/CurieTimer1BlinkSpeed.ino b/libraries/CurieTimerOne/examples/CurieTimer1BlinkSpeed/CurieTimer1BlinkSpeed.ino
index 04147cf0..88f2ee7e 100644
--- a/libraries/CurieTimerOne/examples/CurieTimer1BlinkSpeed/CurieTimer1BlinkSpeed.ino
+++ b/libraries/CurieTimerOne/examples/CurieTimer1BlinkSpeed/CurieTimer1BlinkSpeed.ino
@@ -5,7 +5,8 @@ const int blinkPin = 13;
 void setup(void)
 {
   CurieTimerOne.initialize(50000);
-  Serial.begin(9600);
+  Serial.begin(9600); // initialize Serial communication
+  while(!Serial) ;    // wait for serial port to connect.
 }
 
 void loop(void)
diff --git a/libraries/CurieTimerOne/examples/CurieTimer1Interrupt/CurieTimer1Interrupt.ino b/libraries/CurieTimerOne/examples/CurieTimer1Interrupt/CurieTimer1Interrupt.ino
index 30750399..a7284b5b 100644
--- a/libraries/CurieTimerOne/examples/CurieTimer1Interrupt/CurieTimer1Interrupt.ino
+++ b/libraries/CurieTimerOne/examples/CurieTimer1Interrupt/CurieTimer1Interrupt.ino
@@ -38,8 +38,8 @@ void timedBlinkIsr()   // callback function when interrupt is asserted
 void setup() {
 
 #ifdef SERIAL_PORT_LOG_ENABLE
-  Serial.begin(115200);
-  while (!Serial);  //  wait for the serial monitor to open
+  Serial.begin(115200);  //  initialize Serial communication
+  while (!Serial);       //  wait for the serial monitor to open
 #endif
 
   // Initialize pin 13 as an output - onboard LED.
diff --git a/libraries/SPI/examples/BarometricPressureSensor/BarometricPressureSensor.ino b/libraries/SPI/examples/BarometricPressureSensor/BarometricPressureSensor.ino
index 8104fcbc..4e5a2734 100644
--- a/libraries/SPI/examples/BarometricPressureSensor/BarometricPressureSensor.ino
+++ b/libraries/SPI/examples/BarometricPressureSensor/BarometricPressureSensor.ino
@@ -38,7 +38,8 @@ const int dataReadyPin = 6;
 const int chipSelectPin = 7;
 
 void setup() {
-  Serial.begin(9600);
+  Serial.begin(9600); // initialize Serial communication
+  while(!Serial) ;    // wait for serial port to connect.
 
   // start the SPI library:
   SPI.begin();
diff --git a/libraries/SerialFlash/examples/CopyFromSerial/CopyFromSerial.ino b/libraries/SerialFlash/examples/CopyFromSerial/CopyFromSerial.ino
index d7c4f376..6d1af440 100644
--- a/libraries/SerialFlash/examples/CopyFromSerial/CopyFromSerial.ino
+++ b/libraries/SerialFlash/examples/CopyFromSerial/CopyFromSerial.ino
@@ -82,7 +82,8 @@
 #define CSPIN             21
 
 void setup(){
-  Serial.begin(9600);  //Teensy serial is always at full USB speed and buffered... the baud rate here is required but ignored
+  Serial.begin(9600); // initialize Serial communication
+  while(!Serial) ;    // wait for serial port to connect.
 
   pinMode(13, OUTPUT);