This paper deals with the design of digital lexicographical products. It introduces the philosophy of human-centered design, as explained in the work of Don Norman, and discusses central design concepts like affordances, signifiers, feedback, and other forms of good communication from lexicographer to user. The successful use of traditional dictionaries often relied on the presumed reference skills of the envisaged target user group. Especially in printed dictionaries with their space restrictions, lexicographers used condensed entries, abbreviations, and different types of structural indicators to save space. This often was to the detriment of the user who struggled to retrieve the required information from the data on offer. The digital e...