Each NLQ character definition requires 36 data numbers. Therefore, each vertical column must be divided into three sections for the calculation of data numbers. The process is not difficult once you get some practice using it.

Figure 5-6 shows a single column to make clear how the data numbers are calculated. Notice that in designing NLQ characters circles are used instead of dots to make it easier to keep track of overlapping dots.

Figure 5-6.

Data numbers for one column

To calculate the data numbers for this column, you see which dots

are used in the top group (the top eight positions) and add their values together. Then you go down to the middle group (the next eight

User-defined Characters

5.9