1. One or more computer-readable memories storing instructions which, when executed by one or more processors disposed in a device, implement a method for real-time sharing of content between respective local and remote parties using local and remote devices during a phone call, comprising: during the phone call, exposing a user interface (UI) for initiating the real-time sharing; enabling selection of content for sharing, the shareable content being locally available to the local device or available to the local device from a remote source; enabling pre-staging of content in which pre-staged content is separate from presently shared content so that the remote party is prevented from viewing the pre-staged content; enabling the local party to move content from pre-staging to presently shared content so that the local party can control pacing of presentation of instances of shared content items with the remote party; providing tools for highlighting portions of shared content for the remote party, the highlighting including graphics or text annotations.