In fact, this section adds one of the elements that distinguishes a GIS from most drawing and CAD programs. You want to create a digital map, but your map needs to be tied to the real world. Your points, lines and polygons must have some relationship to Earth location. Tics are points on your digital or paper map for which you have real-world coordinates. In sum, to digitize, you set up a series of tics around the map, normally at least four of them.
More tics are preferable.
For now, you will simply click on each tic labeled 1 through 6 on the map. You enter each tic by first specifying the tic ID number, then clicking on the tic location. Now move the cursor's crosshairs over the point labeled 1 on the northwest corner of the map on the tablet. Try to get as close to the exact location as possible. Then press the 1 key on the cursor.