Discussions attached to a recipe truly are a useful tool for collaborative work.
When a remark is written we can give indications about the line number that needs to be modified.
Since the modifications modify the lines position, it is hard to keep track of the parts that need to be modified. In other words, after a modification (such as a line deletion), all the other remarks will give wrong line number.
It will be so useful to work with a code / line number tracker. With this type of tracker all the remarks will continuously give the right updated line number.