In case that several branches are maintained at the same time, ‘change list'(ex. bug fix) tends to be patched to several different code branches. General way to apply ‘change list’ is code-merge. In this case, the guy who merges ‘change list’ may not know enough about change. So, there should be information about checking patch result – to verify that patching is successful or not – as a comments of ‘change list’.
One of good example is something like this.
* before patch : title string is “xxxx” in screen A.
* after patch : title stringis “yyyy” in screen B.