That exercise is very interesting because those documents will be written in such a way that is gold dust to the applicant.
If I asked you to describe yourself to me, the first things you’d tell me would be the absolutely crucial traits that you’d want to convey. If we did that exercise for 5 minutes, the things that you’d say in minute 4, would still be relevant, but not as pertinent as the ones you said in minute 1.
The same goes for the person specification and job description. The things that are the MOST IMPORTANT always appear in the top 3rd of the page, and that’s the exact skills, traits and competencies that you should be ‘mirror and matching’ back in your CV or application form.
You want to get the recruiter to feel that you really ‘tick all the boxes’ so that’s why each CV needs to be tailored to each vacancy. That hopefully will get you on the ‘invite to interview’ list, rather than on the ‘reject’ pile.
The company gives you the clues … you just have to pick up on them!