16. A computing device as recited in claim 14 , the review system being further configured to: receive a selection of an additional one of the multiple comments; and change the canvas portion based on a presentation context of the adaptive content for an additional one of the at least one remote computing device at which the selected additional one of the multiple comments was input.
14. A computing device comprising: a display including a canvas portion in which adaptive content is displayed and a separate, non-overlapping comment portion in which multiple textual comments received from at least one corresponding remote computing device are displayed; and at least one non-transitory computer-readable storage media comprising instructions stored thereon that, responsive to execution by the computing device, causes the computing device to implement a review application programmed to change the canvas portion displayed at the computing device based on a presentation context of the adaptive content for one of the at least one remote computing device and further display an overlay when selection of one of the multiple textual comments was received, and wherein the canvas portion is changed such that a width of the adaptive content has a same width as a display area of the one of the at least one remote computing device corresponding to the selected one of the multiple textual comments, and the presentation context identified by metadata describes characteristics to allow a presentation of the visual overlay of the one of the at least one remote computing device corresponding to the selected one of the multiple textual comments, and the visual overlay presented over the changed canvas portion and providing a visual of which parts of the adaptive content were displayed at the at least one remote computing device.