DTL ContourMaster is meant for testing and correcting all kinds of errors in BE and IK contours, e.g. open contours, double points, overlapping contours, double contours and missing extreme points in batch. Stem widths and serif thickness can also be checked
A program like DTL ContourMaster is indispensable, especially for large quantities of characters that together form multiple code pages in TrueType or OpenType fonts.