The following order will be used to find coordinates for station and reference points :
In some formats the fixed points can be shown in the beginning of the observation book. These will be read in while reading the observation book and shown in the report.
Before you calculate observation book, read in all vector files having points you want to use in the calculation. Coordinates for station and reference points are searched from every file in the file element list.
Points calculated earlier in the observation book will be checked.