Gillian punched up a coordinate reference grid, wondering if diere were some tiny island out here.
The topography was then sculpted manually, correlating locations with the maps by means of a reference grid.
This can be seen in the new maps' reference grid, insistently indexed to 15 seconds of latitude and longitude.
To navigate it, you need a map with elevations, contour lines and reference grids.
Then break it into 15x15 pixel blocks and insert the reference grid between them.
For a full Aztec code, it is broken into four 10-bit pieces, and those pieces are each divided in half by the reference grid.
A green reference grid slipped up over his vision and he focused on a jetty at the far end of the town's clearing.
The less common printing term "reference grid," is an unrelated system with roots in the early days of printing.
There's no ball, you just swing the club across a reference grid.
Without a clear reference grid, it becomes more accurate to describe the four dimensions as towards/away, left/right, up/down and past/future.