Simplified user interfaces (SUIs) refer to a new design technique in technical communication that simplifies screenshots by removing irrelevant elements and highlighting only the essential information. While there is consensus on the benefits of signaling in multimedia learning, there is currently no empirical evidence on the effects of SUIs on user performance. This study reports an eye-tracking experiment that examined whether users can work more effectively and efficiently with a software tutorial containing SUIs instead of unedited pictures without signaling or pictures using conventional signaling techniques. The study also aimed to clarify whether SUIs draw user attention to relevant areas of a picture. Eye tracking and performance measures indicate that SUIs draw user attention successfully, but do not improve user performance compared to unedited screenshot in a tutorial scenario. The results contribute to the question of whether design principles of multimedia learning can be successfully transferred to action-oriented texts.

The success of an application programming interface (API) crucially depends on how well its documentation meets the information needs of software developers. Previous research suggests that these information needs have not been sufficiently understood. This article presents the results of a series of semistructured interviews and a follow-up questionnaire conducted to explore the learning goals and learning strategies of software developers, the information resources they turn to and the quality criteria they apply to API documentation. Our results show that developers initially try to form a global understanding regarding the overall purpose and main features of an API, but then adopt either a concepts-oriented or a code-oriented learning strategy that API documentation both needs to address. Our results also show that general quality criteria such as completeness and clarity are relevant to API documentation as well. Developing and maintaining API documentation therefore need to involve the expertise of communication professionals.