A Syntax Error occurs when you try to execute a Vision expression that is not formulated correctly.
Execution is terminated as soon the first syntax error is encountered.
Several other mistakes will produce syntax errors. You will generate a syntax error if you execute a program that has a mismatched number of quote characters. You will also generate a syntax error if you do not have the appropriate number of closing parentheses or brackets in your program. Since the set of magic words is fixed and internal to Vision, you will generate a syntax error if you try to use an unknown magic word. Not Found error occurs because you have asked Vision to execute a message that is not defined.