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improve clarity about row assignments for students. Fix formatting.

    1: \label{Spreadsheet_Row_Numbers}
    2: 
    3: LON-CAPA ensures every row in a spreadsheet is uniquely and persistently
    4: assigned a row number.  Once a row number is used, it cannot be reused.
    5: The following sections describe the consequences
    6: of this and answer ``why are the rows of the spreadsheet out of order?.''\\
    7: 
    8: \noindent
    9: \textbf{Assessment Spreadsheet}
   10: 
   11: Every parameter associated with an assessment has a unique row in the
   12: assessment level spreadsheet.  As new parameters are encountered they
   13: are assigned the next available row number.  Adding a parameter to an
   14: assessment thus results in the new parameter appearing at the bottom of
   15: the spreadsheet.  Since the default spreadsheet definition must cover all
   16: of the assessments in the course, there are likely to be a large number of
   17: parameters available.\\
   18: 
   19: \noindent
   20: \textbf{Student Spreadsheet}
   21: 
   22: The student level spreadsheet displays information about each assessment
   23: in the course.  The row numbers are initially assigned based on the order 
   24: in which assessments appear in the course.  If a new assessment is 
   25: added at a later time, it will be assigned the next higher row number.
   26: Regardless of the row number, the assessment will appear in the proper place
   27: in the course structure.\\
   28: 
   29: \noindent
   30: \textbf{Course Spreadsheet}
   31: 
   32: The rows of the course spreadsheet are assigned to students when they are
   33: encountered processing the class list.  Each student is 
   34: assigned a row number the first time they are present in the course.
   35: The rows are listed alphabetized by the students full name and the row
   36: numbers are assigned in this order.  If a student is later added, they
   37: will appear in the proper place alphabetically in the spreadsheet but
   38: their row number will not be in sequence.