Buttons

Summary 

Buttons are used on the transactional pages of the system where users can make or save changes to a form. 
On pages where a single action button appears, use the Orange button for that primary/default action.
On forms that require primary and secondary action(s), the primary button appears in Green; and the secondary buttons appear in Orange.

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Example

Related patterns 

Hyperlinks
Tabs

Problem (business, user, technical)

Solution

Rationale (other things we tried)