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NAME
    EnqueueCxObj -- insert a commodity object within a list of objects
                    based on object priority. (V36)

SYNOPSIS
    EnqueueCxObj(headObj,co);
                 A0      A1

    VOID EnqueueCxObj(CxObj *,CxObj *);

FUNCTION
    This function puts object 'co' into the list of object 'headObj'.
    The insertion point is determined by the object's priority. The
    objects are kept in the list from the highest priority to the
    lowest. New nodes are inserted in front of the first node with a
    lower priority. Hence a FIFO queue for nodes of equal priority.

    The priority of the commodity object can be set using SetCxObjPri().

INPUTS
    headObj - pointer to a list of objects
    co - the object to add to the list

RESULTS
    If 'co' is NULL, this function will record that fact in the
    internal accumulated error of 'headObj'. This error record
    can be retrieved using CxObjError() and cleared using
    ClearCxObjError().

SEE ALSO
    SetCxObjPri(), CxObjError(), ClearCxObjError()