Question 4/X - Improved methodology to specify Human-Machine Interface
(HMI)

Considering

(a) that there is a need for improved communication of the HMI
specifications between end-users and designers and between humans and
systems, enabling the identification of the data structures to be
managed by the HMI;

(b) that HMI development methods need to be adjusted to cover new
technologies, new application areas and new ways of working;

(c) that both end-users and designers would benefit from a common
overview of the HMI specifications provided by a reference model;

(d) that both end-users and designers must share a common understanding
of the implications of HMI specifications;

(e) that the improved HMI methodology to specify, when tested and
successfully demonstrated, may necessitate revisions and/or replacements
of current Z.300-Series Recommendations;

(f) that Recommendation Z.100, defining completely the Specification and
Description Language (SDL) and Recommendation Z.110 providing guidelines
for the application of FDT, are available and standardized techniques on
information modelling exist;

(g) that work on reference models is progressing within CCITT,

1. What new Recommendations for improved HMI specification techniques
should be provided, including:

- formalism,

- methods,

- reference model,

- testing, demonstration and guidance for usage?

2. What revisions and/or replacements of current Z.300-Series
Recommendations, due to improved HMI specification techniques, should be
provided?

ANNEX

(to Question 4/X)

Identical to the annex to Question 2/X