Three red dots on left edge of file, group, or project icon?

(1) What do the dots indicate for a group or project. (I assume dots for a file mean the maximum line length has been exceeded.) (2) Is this mentioned in the documentation? (I couldn't find an explanation...
Three red dots on left edge of file, group, or project icon?

(1) What do the dots indicate for a group or project. (I assume dots for a file mean the maximum line length has been exceeded.) (2) Is this mentioned in the documentation? (I couldn't find an explanation...
Incorrect 3 brown (red?) dots

I modified the C51 file-specific options for one file in my Project, and the 3 brown (or are they red?) dots appeared as expected. http://www.keil.com/support/docs/1851.htm I then clicked the 'Defaults...
Incorrect 3 brown (red?) dots

I modified the C51 file-specific options for one file in my Project, and the 3 brown (or are they red?) dots appeared as expected. http://www.keil.com/support/docs/1851.htm I then clicked the 'Defaults...
uVision : 3 red dots vertically located on a file in a project

Dear all, As the subject mentions, may anybody explains to me what the 3 red dots on the particular file indicate as? Thanks!