| area | UL_AREA |
| description | string |
| headline | string |
| number | int |
| busses() | UL_BUS |
| circles() | UL_CIRCLE |
| dimensions() | UL_DIMENSION |
| frames() | UL_FRAME |
| instances() | UL_INSTANCE |
| moduleinsts() | UL_MODULEINST |
| nets() | UL_NET |
| polyshapes() | UL_POLYSHAPE |
| rectangles() | UL_RECTANGLE |
| texts() | UL_TEXT |
| wires() | UL_WIRE |
schematic(SCH) {
SCH.sheets(S) {
printf("Sheet: %d\n", S.number);
}
}