The key words MUST, MUST NOT, SHOULD and SHOULD NOT and MAY in bbc.co.uk standards & guidelines are to be interpreted in accordance with the following definitions:
Definition: a process which has been agreed as the most effective and efficient way of doing that action, but has not been officially accepted as a guideline.
Definition: content items that can be clicked. Examples: menu items, buttons, interactive elements of a game.
Definition: the fundamental reason for a web page, without which there would be no point to the page existing. For example, the core content on the CBBC Games page is all the games – if there were no games there would be no point to the page being there.
Definition: please try not to use this technology/tool/process in the future (NB. does not imply that existing items depending on the deprecated technology will no longer work). Example: use of
vote.pl has been deprecated; recording on audio cassettes has been deprecated.
Definition: this will not work any more if you are using it (after decommissioning date). Example: use of exec cgi has been decommissioned; analogue TV broadcasting after 2010 proposed switch-off.
Definition: a guideline is something you SHOULD do, for the good of yourself and your colleagues. Example: Healthy Eating guidelines.
Progressive enhancement is a strategy for web design that emphasizes accessibility, semantic HTML markup, and external stylesheet and scripting technologies. Progressive enhancement uses web technologies in a layered fashion that allows everyone to access the basic content and functionality of a web page, using any browser or Internet connection, while also providing those with better bandwidth or more advanced browser software an enhanced version of the page.
Definition: a standard is something you MUST do, for the good of yourself and your colleagues, which can be monitored and enforced. Example: UK Law.
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