ISO 9241-110: Dialog Principles

1. Task Appropriateness

The system supports users in achieving their goals without unnecessary effort.

Example: An e-mail client allows quick filtering and sorting of incoming messages.

2. Self-Descriptiveness

The system is self-explanatory - every status and every option is clearly described.

Example: Buttons are clearly named (“Save”, “Cancel”), icons have tooltips.

3. Controllability

Users retain control over processes and can consciously trigger or undo actions.

Example: “Back” function in the order process or edit buttons on form fields.

4. Conformity with Expectations

The system behaves consistently and as expected by the target group - based on experience and conventions.

Example: A magnifying glass symbol stands for “Search” and opens an input field.

5. Fault Tolerance

Errors are detected, intercepted or can be corrected without serious consequences.

Example: Mandatory fields are checked before sending

6. Customizability

Users can customize the display or processes to suit their needs.

Example: Font size, language or color scheme can be configured individually.

7. Conduciveness to Learning

The system facilitates the learning process - through consistency, assistance and feedback.

Example: Instructions on first use (“Start tour”), clear status messages.