“The system should always keep users informed about what is going on, through appropriate feedback within reasonable time.” ShouldReasonableAppropriateUsersFeedback Book:Usability Engineering Source: Usability Engineering
“The system should speak the users' language, with words, phrases and concepts familiar to the user, rather than system-oriented terms. Follow real-world conventions, making information appear in a natural and logical order.” WorldShouldRealOrderSpeakLanguageTermNaturalInformationConceptsFamiliarPhrasesLogicalReal WorldConventionsUsers Author:Jakob Nielsen
“Minimize the user's memory load by making objects, actions, and options visible. The user should not have to remember information from one part of the dialogue to another. Instructions for use of the system should be visible or easily retrievable whenever appropriate.” ShouldUseActionRememberMemoriesInformationObjectsDialogueVisibleAppropriateInstructionUsersLoad Author:Jakob Nielsen
“Even though it is better if the system can be used without documentation, it may be necessary to provide help and documentation. Any such information should be easy to search, focused on the user's task, list concrete steps to be carried out, and not be too large.” IfsShouldMayHelpingUsedEasyStepsInformationTasksFocusedListsUsersConcreteDocumentation Book:Usability Engineering Source: Usability Engineering
