Docs: Use "BOARD_LED_PIN" instead of "13".

Fix examples where pin 13 was used explicitly instead of
BOARD_LED_PIN.  Also change an AVR-specific example in
docs/lang/cpp/booleanvariables.rst to Maple conventions.

1 files changed, 7 insertions, 7 deletions

diff --git a/docs/source/lang/cpp/if.rst b/docs/source/lang/cpp/if.rst
index d57b9f1..f248b05 100644
--- a/docs/source/lang/cpp/if.rst
+++ b/docs/source/lang/cpp/if.rst
@@ -43,28 +43,28 @@ conditional. If this is done, the next line (which ends in a
 semicolon) becomes the only line in the body.  The following three
 ``if`` statements all do the same thing::
 
-    if (x > 120) digitalWrite(ledPin, HIGH);
+    if (x > 120) digitalWrite(pin, HIGH);
 
     if (x > 120)
-        digitalWrite(ledPin, HIGH);
+        digitalWrite(pin, HIGH);
 
     if (x > 120) {
-        digitalWrite(ledPin, HIGH);
+        digitalWrite(pin, HIGH);
     }
 
 However, the following two examples are different::
 
     // example 1: two lines of code in the if body
     if (x > 120) {
-      digitalWrite(ledPin1, HIGH);
-      digitalWrite(ledPin2, HIGH);
+      digitalWrite(pin1, HIGH);
+      digitalWrite(pin2, HIGH);
     }
 
     // example 2: one line of code in the if body, and
     // another line of code after the if statement
     if (x > 120)
-      digitalWrite(ledPin1, HIGH); // this is in the if body
-      digitalWrite(ledPin2, HIGH); // this is NOT in the if body
+      digitalWrite(pin1, HIGH); // this is in the if body
+      digitalWrite(pin2, HIGH); // this is NOT in the if body
 
 In the first example, since the body is enclosed in curly braces, both
 lines are included.  In the second example, since the curly braces are