Abstract: Among other things, instances of at least one type of page of a user interface are presented to at least a first user and a second user. Each instance includes a current scope of user interface elements. All of the instances have current scopes that are the same as or subsets of a prototype scope of user interface elements for that type of page. A permitted scope of user interface elements are available to each corresponding user. The permitted scope of the second user is the same as or a subset of the permitted scope of the first user. Selections of user interface elements to be included in an updated scope are received from the first user. The selections include only user interface elements that belong to both the prototype scope for that type of page and the permitted scope of the first user.

Abstract: In general, an indication is received through a user interface of an intention of a potential rider to use an autonomous vehicle. In response to the receipt of the indication, a hailing request is sent by a signaling mode to at least one autonomous vehicle that can receive the hailing request directly in accordance with the signaling mode.

Abstract: Among other things, a user of a browser is exposed simultaneously to three interfaces: A viewing interface for at least one image of a subject that is stored on a device on which the browser is running, a decision support interface that aids the user in determining the state of the subject based on the image, and a template interface that aids the user in capturing uniform descriptive information about the state of the subject. At least two of the viewing interface, the decision support interface, and the template interface operate cooperatively so that actions of the user with respect to one of the two interfaces causes changes in content exposed by the other of the two interfaces.