Code Highlight markup and Link colouration fix scope.adoc

Language/Variables/Variable Scope & Qualifiers/scope.adoc

@@ -19,11 +19,11 @@ subCategories: [ "Variable Scope & Qualifiers" ]
 === Description
 Variables in the C++ programming language, which Arduino uses, have a property called scope. This is in contrast to early versions of languages such as BASIC where every variable is a _global_ variable.
 
-A global variable is one that can be seen by every function in a program. Local variables are only visible to the function in which they are declared. In the Arduino environment, any variable declared outside of a function (e.g. setup(), loop(), etc. ), is a _global_ variable.
+A global variable is one that can be seen by every function in a program. Local variables are only visible to the function in which they are declared. In the Arduino environment, any variable declared outside of a function (e.g. `link:../../../structure/sketch/setup[setup()]`, `link:../../../structure/sketch/loop[loop()]`, etc. ), is a _global_ variable.
 
 When programs start to get larger and more complex, local variables are a useful way to insure that only one function has access to its own variables. This prevents programming errors when one function inadvertently modifies variables used by another function.
 
-It is also sometimes handy to declare and initialize a variable inside a `for` loop. This creates a variable that can only be accessed from inside the for-loop brackets.
+It is also sometimes handy to declare and initialize a variable inside a `link:../../../structure/control-structure/for[for]` loop. This creates a variable that can only be accessed from inside the link:../../../structure/control-structure/for[`for`]-loop brackets.
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