
Dataset name definiion:
*.csv  "time-series" file with the name <DATASET>_<TIMESERIES>.csv
CL_*  "code-lists": contains the identifier and mapping to other codes and descriptions; 
HCL_*  "hierarchical code-lists": contains the grouping information, a pointer (foreign key) from the reference object (parent) to the children
DSD_* "Data Structure Definition": describes how information in a specific dataset is structured. It defines the dimensions, measures and their related attributes.


Character encoding system in CSV files
All information contents in the files in CSV (comma-separated values) format are in UTF-8 format. 
To open these files in Excel, go to the menu
Data->From Text and select File origin "65001: Unicode UTF-8" and comma delimiter


NB: When viewing time-series data in FISHSTAT, in order to obtain the aggregates presented in the 
Summary Tables of the "FAO Yearbook of Fishery Statistics - Aquaculture Production" which exclude production figures 
for aquatic plants, pearls and mother-of-pearl, data should be filtered using a Custom Group:
"Fish, crustaceans and molluscs, etc."(1801). 
The species of this group are shown in CL_FI_SPECIES_GROUPS.csv file in the column Yearbook_Group.


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