The following constants are recognized by name:
| e | Natural log base |
| pi | 3.14159... |
| PI | 3.14159... |
| NULL | 0.0 |
| INFINITY | Maximum extent of object coordinate field |
| TRUE | 1 |
| FALSE | 0 |
| EOF | -1 |
The value of INFINITY is one million microns. This is the value of ``infinity'' in the cell coordinate system used by Xic.