The following constants are recognized by name:
| e | Natural log base |
| pi | 3.14159... |
| PI | 3.14159... |
| NULL | 0 |
| INFINITY | Maximum extent of object coordinate field |
| TRUE | 1 |
| FALSE | 0 |
| EOF | -1 |
| CHARGE | 1.60217646e-19 |
| CTOK | 273.15 |
| BOLTZ | 1.3806226e-23 |
| ROOT2 | square root of 2 |
The value of INFINITY is the internally assumed absolute limit for valid coordinates, in microns. This is 1e9 divided by the database resolution, which is the value of the DatabaseResolution variable if set, or the default of 1000.