ISO 9241-143:2012 provides requirements and recommendations for the design and evaluation of forms, in which the user fills-in, selects entries for or modifies labelled fields on a "form" or dialogue box presented by the system. Often the system then creates or updates the data associated with the form. Form-based entries typically are in the form of typed input (abbreviations, or full names) or selections from available option lists.
ISO 9241-143:2012 is applicable to forms regardless of the modality in which they are rendered (visual, spatial, vocal); much of its guidance is based on a model of visual and spatial relationship. In addition, it specifies the use of non-text methods for providing forms entries (e.g. list boxes) and pertains to dialogue boxes which utilize form techniques. Guidance is provided on the selection and design of those user-interface elements relevant to forms.
While it covers lists used to enter forms data, menus which are similar to lists are outside its scope (see ISO 9241‑14). It is not applicable to the hardware aspects of forms.
The requirements and recommendations in ISO 9241-143:2012 are applicable throughout the development process (for example, as guidance for designers during design, as a basis for heuristic evaluation, as guidance for usability testing) and in the procurement process.