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Pronouns may be used as nouns, but only for emphasis or added clarity.
They are not required. Thus, the following sets of sentences are all
grammatically correct.

    {yaS vIlegh jIH} "I see the officers."
    {yaS vIlegh}
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Taking this literally, adding the suffix {-'e'} even adds more emphasis.
It is used with the pronoun jIH, because it cannot be attached to a verb.

The suffix -'e' does more than add even more emphasis. It adds focus. It makes the noun to which it is attached exclusive.

Notice the examples in TKD (correcting for forgotten prefix):

jIlujpu' jIH I have failed.
jIlujpu' jIH'e' I, and only I, have failed.

De' vItlhapnISpu' I needed to get the information.
De''e' vItlhapnISpu' I needed to get the INFORMATION. It was the information (and not something else) that I needed.

Notice that jIlujpu' jIH does not exhibit any kind of emphasis.

There are also examples of explicit pronouns in section 6.1:

puq vIlegh jIH I see the child.
jIH mulegh puq The child sees me.

Okrand goes on to say that explicit pronouns can "as here, be used for emphasis." The emphasis of the above two sentences is merely the emphasis of making it clear to the reader which pronoun is the correct subject or object. There is no semantic significance to including the pronouns on these sentences. puq vIlegh jIH doesn't mean *I* see the child, with some kind of emphasis on the I. It means simply I see the child, and I'm making it quite explicit what the subject of the sentence is.

In other words, explicit pronouns don't MEAN anything special in the sentence. They are just used when you want to be as clear as possible. Maybe to disambiguate. Maybe because your audience isn't very good at Klingon yet. Maybe because you're speaking very slowly and carefully to get someone's attention.

In an interview with Lawrence Schoen in 1995, Lawrence pointed out that Okrand's use of -'e' was focus, not topic, despite what it says in TKD, and Okrand accepted this correction. http://klingonska.org/canon/1995-06-holqed-04-2-a.txt

The trouble is just that Okrand used the vague word emphasis for multiple different phenomena without explanation. The examples given, however, make the difference clear. -'e' on a subject or object give the noun grammatical focus. Plain explicit pronouns only provide clarity without changing the meaning of the sentence.

-- 
SuStel
http://trimboli.name