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STEP 4:  CALCULATE THE ADMINISTRATION LEVELS

ADMINISTRATIVE LEVEL 0

• Open attribute table and calculate AdminLevel = Verify that AdminLevel was set to 0 for all features .  (This was probabably automaticly done by the field creation process.)  (Higher administrative level features will be adjusted later.) 
• Create a definition query to select the line segments with different 'LEFT_A0' and 'RIGHT_A0' attributes.
• Recall that shoreline features need to be coded especially as '99'.  If the country has a shoreline follow the SHORELINE TREATMENT stepswhen the field was created.  If this is indeed the case then it is only necessary to adjust AdminLevel to 99 for shoreline features according to the SHORELINE TREATMENT section below.    Higher administrative level boundaries will be re-coded later.

SHORELINE TREATMENT

• Open an editing session for the line shapefile.
• Manually select line segments that represent shorelines (splitting line segments where an international border meets the water).  It may be useful to add a world country layer or neighboring country layers.

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