Annotations in ship's manifest.

On a passenger list from 27 April 1902, SS Marion, image no. 3: http://search.ancestry.com/Browse/view.aspx?dbid=8745&path=1902.04.Merion.3&sid=&gskw=&cr=1 On line 27, I find the code "X-978" written across column no. 4 and 5. I also have problems interpreting colum 6 and 11 and 12 for the same person. From what I have learned, a "X" to the left of the passengers name would mean that the person was detaind. Does this mean the same, and will the "978" give the reason? I will be very grateful to anyone that can help me solve any of these problems.