The Strategies of Text Revision in Virtual Reality Environments ZHENG Yilin Extensive research and related techniques and algorithms enable users to type with promising speed and accuracy in VR environments. However, there lacks essential consideration on the facilitation of text revision quality and performance, especially for the typing with virtual keyboards. In this study, we first did a broad and thorough literature review to point out the pain-points about the lacking of text revision in

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... urrent VR text input research. We found that, for VR virtual keyboards, backspace is the dominant tool available for text revision without considering the text revision efficiency, cursor control is less deployed an developed in current VR virtual keyboards. Facing this, we further explore the possibilities of text revision designs based on different kinds of backspace and caret (cursor) control and implemented four VR text revision techniques to enhance text revision performance when typing with virtual keyboards and handheld controllers. We conducted a comparative user study to further evaluate users' text revision performance with our four text revision techniques. Results showed that using the word-level backspace and the continuous cursor control can enhance users' capabilities when revising text with virtual keyboards. This study can contribute the community of text entry with 1) a basic understanding on current research status of text revision in VR text input designs, 2) a series of feasible text revision solutions based on the backspace and cursor control, and 3) design guidelines and suggestions for Contents Chapter 1 Introduction Chapter 2 Related Work