A typical SDE30 definition looks like this:
SDE30_DEF WORLD \
SDE_LAYER WORLD_GEOM \
SDE_GRID{0} 1000000 \
SDE_DIMENSION 2 \
SDE_CONFIG_KEYWORD DEFAULTS \
SDE_MEASURED Y \
SDE_ANNOTATED Y \
SDE_AREA Y \
SDE_LINE Y \
SDE_POINT Y \
SDE_SIMPLE_LINE Y \
SDE_NIL Y \
SDE_MULTIPART Y \
SDE_XORIGIN -19000000 \
SDE_YORIGIN -19000000 \
SDE_SCALE 10 \
SDE_ZORIGIN 0 \
SDE_ZSCALE 1 \
SDE_MEASURED_ORIGIN 0 \
SDE_MEASURED_SCALE 1 \
SDE_TOLERANCE 0.0004 \
SDE_MEASURED_TOLERANCE \
SDE_ZTOLERANCE \
SDE_INDEX countryCapital \
SDE_INDEX_CONFIG DEFAULTS \
SDE_COLUMN_NAME COUNTRY,CAPITAL \
SDE_UNIQUE N \
SDE_SORT_ORDER ASCEND \
COUNTRY char(3) \
CAPITAL char(30) \
SDE_UPDATE_FIELDS COUNTRY,CAPITAL