This routine determines if the right-most direction has the value of ‘NO’ followed by a number. If so, it turns the ‘NO’ into an IGNORE.
Also, if the pattern is ‘HSNO ROUTE ROUTE#’, and ROUTE is a rural route, this routine turns HSNO into BOX#.
Example
The entry as it may be found in the table:
This function recodes the pattern to:
Then this pattern is looked up and the final result is the following:
