Please add bookmarks

I'm new to Textastic, and I like it, but I need a way to navigate more quickly and efficiently through the source code.  I'm currently working on a file with more than 6000 lines of html code, and navigation is simply too cumbersome.  I suggest adding a bookmarking capability that would be available in both the editor and the viewer.  In the viewer, this feature would allow me to jump immediately to the section of code that I'm currently working on, without having to manually scroll and visually search for the area of interest.  Thanks, Tom