Interactive graphs – for example, ones that can be zoomed and focused or in which the data can be filtered to plot various subgroups – can be developed using HTML5, JavaScript, and other software tools and plugins (open source and proprietary). Such graphs require alt text, including explanation of how to interact with them. Further coding may be required to ensure that people who use assistive technologies such as screen readers will always be able to access an alternative representation of the data presented. AccessibilityOz, in collaboration with the Bureau of Meteorology, has developed fact sheets and guides on accessibility for interactive displays, JavaScript, HTML5 and coding (see Additional resources for graph accessibility).