Who changed my annotation? An investigation into refitting freeform ink annotations

摘要

Pen-based computing allows users to seamlessly add freeform ink annotations to dynamic digital documents. When these documents change, the annotations should adapt, or “refit”, in response to these changes. While previous studies have demonstrated ways of refitting, there have been few investigations in what the users expect to happen. In this paper, we report on an investigation into user expectations for refitting freeform ink annotations. We explored how the four main categories of annotations can be refitted and what user thought of each approach. Our findings indicate the approach depends on the user's overall preference and the category of annotation. Furthermore we suggest ways to implement freeform ink annotations on dynamic digital documents.