diff --git a/print.c b/print.c
index de3a1ad..697ffb5 100644
--- a/print.c
+++ b/print.c
@@ -71,6 +71,9 @@ void printInteger(long n)
 	printIntegerInBase(n, 10);
 }
 
+// TODO: This is nasty. I can't remember where I got this, but this monster 
+// will truncate leading zeroes from the fractional part so that 
+// 3.5, 3.05 and 3.000005 all will print as 3.5!!! Needs fixing fast.
 void printFloat(double n)
 {
   double integer_part, fractional_part;
diff --git a/print.h b/print.h
index c2b76a6..b2581ba 100644
--- a/print.h
+++ b/print.h
@@ -25,9 +25,13 @@
 #define print_h
 
 void printString(const char *s);
+
 void printPgmString(const char *s);
+
 void printInteger(long n);
+
 void printIntegerInBase(unsigned long n, unsigned long base);
+
 void printFloat(double n);
 
 #endif
\ No newline at end of file
diff --git a/serial.h b/serial.h
index ec41433..4991d5c 100644
--- a/serial.h
+++ b/serial.h
@@ -24,8 +24,10 @@
 #ifndef serial_h
 #define serial_h
 
-void serial_init(long);
-void serial_write(uint8_t);
-uint8_t serial_read(void);
+void serial_init(long baud);
+
+void serial_write(uint8_t data);
+
+uint8_t serial_read();
 
 #endif