Why do I see red "X" markers on my folders and files in Workbench Project Explorer subwindow?
In the Altair Analytics Workbench text editor, there is a built-in syntax checker. As you type your SAS language programme, the editor checks the syntax, and puts a red "X" marker alongside any lines that is does not think represent correct SAS language code.
Any folder containing SAS language scripts that contain suspected syntax errors and also marked with a red "X".
However the SAS language has many variations in syntax structure so the editor is not always able to reliable determine whether your syntax is correct or not. In addition, the macro processor capability of the SAS language makes it always possible to confuse the syntax checker with advance macro deployment.
For the advance user, who may not wish to see these red markers, they can easily be switched off:
Visit the Preferences dialog on the "Window" menu of the Workbench.
Under Preferences > Altair > Errors/Warnings you can enable or disable "language validation errors".