This function checks if any data has empty codes or codes that do not match your code list. The function applies only to the T3 code field. If an unknown code appears you can give a new code. The function applies only to the active element.
Executing function with the Shift-key lists all codes in file regardless their existence in the code file.
The number of unknown codes found. The list shows all the unknown codes. The code is shown on the left and in brackets the number of points found.
Giving the new code. Select from the code list a new code, then press Change (or double click code in list), give new code and the code for all points will be changed.
With the Shift-key code can be selected fron the T3-list and with Ctrl-key from the system code list.
See also: Coding system.