I am writing my thesis and I use a programming language to do the analysis of my empirical part in my thesis. I give interpretations, tables and graphics according to the code in the programming files. Now, I want to give reference to this files in my master thesis, whenever I interpret the results or show graphics, which were generated by these files. Sometimes it is just one file, sometimes more than one file. In the text, I could use the margins to give reference to the files. In the graphics and tables, I could include it in the caption. However, I wanted to ask, if there is a professional solution for this problem. I would like to create a designes reference, e.g. see this: Under a table, they give reference to the .xpl file with a self-created logo:
I am aware of the fact, that the design of the logo itself I have to do with a graphical tool, but how can I implement this logo with the filename in a professional way? It does NOT need to be a hyperlink or active link.