3 The main input file
3.1 An example
3.2 Sections
3.3 Statements
3.4 Constants
3.5 Status messages
3.6 Input sections
3.6.1 Time
3.6.2 GRID
3.6.3 OPTIONS
3.6.4 ENVIRONMENT
3.6.5 INITIAL-DATA
3.6.6 CHEMISTRY
3.6.7 BORDER-DATA
3.6.8 WEST, EAST, NORTH, SOUTH
3.6.9 TOP
3.6.10 GROUND
3.6.11 EMISSIONS
3.6.12 REDUCTION
3.6.13 DEPOSITION
3.6.14 GROUNDCLASSES
3.6.15 NESTING
3.6.16 OUTPUT