Once a constant is defined (eg with Const statement), typing the constant later in the code will automatically change to the constant case defined in the Const statement.
Having the statement:
Const my_Integer_Constant = 2015
And typing the following line
my_integer_constant = my_integer_constant + 5
Would change to
my_Integer_Constant = my_Integer_Constant + 5
If the constant case is changed in the Const statement, all references to the constant in the code should automatically update.
In example shown above, if the Const statement is changed to:
Const MY_INTEGER_CONSTANT = 2015
the statements with that variable should automatically update to:
MY_INTEGER_CONSTANT = MY_INTEGER_CONSTANT + 5