Seeed motor driver 1.2

for some reason I couldn't download the few lines of code that i would need to determine if my wiring and connections were correct to see that it works. I have the motor driver connected to an Arduino Uno. There were only a few lines in the program so I typed them in myself. I was able to upload but no joy. the question is what does it mean when some instruction come up in red when I type them in?

Use the “</>” button in the menu to post all of your code.
Which line of code is RED?
“No joy” is not a description of a problem.