I parsed many strings from a website today. These strings were created by a user. So they didn't have a structure. It seemed easier to search for some keyword (like €/$) and extract substrings than writing a grammar. Working with positions can be compilcated, so I created this little tool to visualize it and make it a bit more easy and to save some time.

Looks like a good and simple tool. In some cases it's just easier and faster to work with buffer positions. I can be tricky though.