Why are the texts red on monodevelop?

It is inconvenient to work.
But it works fine on Unity3D Editor.
Unity3D Editor do not recognize the error these red texts.


Your DLLTest library is not recognized. You must compile it again or not use it.

Go to Build > Clean All
Worked for me!

They’re not errors. It’s just colouring the words it recognises as classes or functions to try to make it more readable.