All my books I used to read on the Google play books but now I realised that it is not possible to export your marked book with the highlighted stuff in the same file. The export takes place by getting the raw book (in the original condition) and the notes are exported seperatly. There is no way I can merge them and this is terrible. I will give this app a One star for this reason and if this limitation goes away then its a 5 star. Ps look into it as all my hard work goes waste as I can not export or share the marked content.