1. A method comprising: determining that an electronic document includes a first phrase that is at least similar to a first phrase of a plurality of phrases in a database and a second phrase that is at least similar to a second phrase of a plurality of phrases in the database, wherein the electronic document includes content contributed by a plurality of contributors; determining that a first contributor of the plurality of contributors is associated with the first phrase in the electronic document and a second contributor of the plurality of contributors is associated with the second phrase in the electronic document; determining that the first phrase identifies a first text effect in the electronic document and that the second phrase identifies a second text effect in the electronic document; determining that metadata of the electronic document indicates that first content of the electronic document comprises the first text effect and that second content of the electronic document comprises the second text effect; creating a first mapping between the first contributor and the first text effect and a second mapping between the second contributor and the second text effect after determining that the metadata of the electronic document indicates that the first content comprises the first text effect and the second content comprises the second text effect; determining a first location in the electronic document of the first content and a second location in the electronic document of the second content; associating the first location with the first mapping and the second location with the second mapping; supplying the first mapping and the second mapping for presenting of the electronic document; and modifying the electronic document to include an indication of the first contributor at the first location and an indication of the second contributor at the second location.