The latter is quite essential, since it would be a real pain if you were to process entire files or entire columns, only to have the remainder of the file contaminated with unwanted text. It would be especially difficult if the strings you're trying to get rid of are present in the opening row only.
All in all, while the utility lacks a decent feature set, the application still does the job.
Software compatibility:
OS X 10.11.6
Microsoft Windows 10 64 bit 50e0806aeb yevbere
https://commongroun