Method of rendering visual presentations of data

A non-transitory computer readable medium having instructions recorded thereon, the instructions when executed by a computer device implementing a method comprising:

• generating a modified description from an initial description of a set of visual presentations of data, by replacing at least one visual presentation in the set with a visual presentation of a textual key;
• generating a first render of the data based on the initial description;
• generating a second render of the data based on the modified description;
• identifying a first portion in the first render, the first portion encompassing visual display of data of the at least one visual presentation;
• replacing, using a computing device, a second portion in the second render with the first portion, the second portion encompassing visual display of the textual key.