I could help Scrutinizer trying to explain the example with sed.

Code:

sed '/Policy Name/,/End of Policy/d' file

To find text you put it between / /
So if you want to find some text you can do it like this /Policy Name/

Then, if you separate two different text searches between a comma , then these will be used as delimiters, to perform some action for that matching text.

That means /Search from this start point/,/Until you find this coincidence/

The letter d at the end is the action you are telling sed what to do with all that matching text. d comes from "delete".

So that command could be translated into,

Code:

sed '/A/,/B/d' file

"Find this string A and stop when you find this other match B. Then what you have to do is delete all those strings from the output, so I tell sed to perform this with the d at the end."

Since sed works with lines, sed will delete all the lines that finds from A -> to B.

Code:

sed '/A/,/B/d' file