Associated with each version control system there’s a comparison tool for extracting the differences between two versions of a document. These tools tend to make a comparison based on textual information from documents, in which the indivisible element is the line or word. But the content versioned is usually highly structured (for example, programming languages) and the use of this mechanism can disrespect syntactical limits and other properties of the document, becoming difficult to interpret what really changed. In this work we created a tool to identify differences between two versions of a document using a comparison mechanism based on the syntactic structure. Thus, it is possible to identify more precisely the relevant differences to the reader, reducing the effort to understand the semantics of the changes. The tool can support different types of documents by implementing components that interprets the desired syntax. The example syntax component implemented in this work deals with the syntax of the programming language C++.