7.1 INTRODUCTION7.2 THE BASIC CONCEPT OF SHAPE WRITING7.3 INFORMATION AND CONSTRAINTS7.4 SHAPE-WRITING RECOGNITION7.5 OUT-OF-LEXICON INPUT, AMBIGUITY, AND ERROR HANDLING7.6 HUMAN SENSITIVITY TO SHAPE AS AN ENCODING MODALITY AND THE PROGRESSION FROM TRACING TO DIRECT SHAPE WRITING7.7 EFFICIENCY AND LAYOUT MATTERS7.8 THE MULTIPLE DIMENSIONS AND GUIDELINES OF EFFICIENT TEXT ENTRY7.9 FURTHER READING