בסעיף הראשון כתוב מה צריך לעשות, ובנספח יש דוגמה קצרה.

It is made of three parts:

• ב־ = in
• סעיף = section / clause / item
• הראשון = the first

So בסעיף הראשון means in the first section.

A useful thing to notice: the definite article ה־ often gets absorbed after prepositions like ב־. So underlyingly this is like:

• ב + הסעיף הראשון → בסעיף הראשון

That is why you do not see a separate ה on סעיף.

Because in Hebrew, adjectives normally come after the noun.

So:

• סעיף ראשון = a first section
• הסעיף הראשון = the first section
• בסעיף הראשון = in the first section

This is the normal Hebrew word order for noun + adjective.

In Hebrew, adjectives agree with the noun in:

• gender
• number
• definiteness

Since the noun is definite here, the adjective must also be definite.

So:

• סעיף ראשון = a first section
• הסעיף הראשון = the first section

Even when the noun has a preposition attached, the adjective still shows definiteness clearly:

• בסעיף הראשון

That is one clue that the phrase means in the first section, not just in a first section.

Literally, כתוב means written.

But in sentences like this, it often functions idiomatically as:

• it is written
• it says
• it is stated

So בסעיף הראשון כתוב מה צריך לעשות is literally something like:

• In the first section, it is written what needs to be done

A natural English translation is:

• The first section says what needs to be done
• In the first section, it says what needs to be done

This is very common in formal or instructional Hebrew.

Because Hebrew often uses the masculine singular form in an impersonal or default way.

Here, כתוב does not really describe a specific masculine noun that appears in the sentence. It works more like an impersonal expression: it is written.

You can think of an understood idea like:

• זה כתוב = it is written
• or simply an impersonal כתוב = it says / it is written

So the masculine singular form is the standard default here.

It breaks down like this:

• מה = what
• צריך = need / necessary / required
• לעשות = to do

So literally it is something like:

• what is necessary to do
• what one needs to do

In smoother English, that becomes:

• what needs to be done
• what needs to be done

A key point: צריך can be used impersonally in Hebrew, so you do not always need to state who needs to do it.

Compare:

• מה צריך לעשות = what needs to be done / what one should do
• מה אתה צריך לעשות = what you need to do

Because Hebrew often leaves the subject unstated when the meaning is general or impersonal.

In English, we often add something like:

• you
• one
• it

Hebrew can simply say:

• צריך לעשות = it is necessary to do / one needs to do

So מה צריך לעשות naturally means what needs to be done without naming a specific person.

This is especially common in instructions, rules, and formal writing.

יש is the standard Hebrew word for there is / there are.

So:

• יש דוגמה קצרה = there is a short example
• ובנספח יש דוגמה קצרה = and in the appendix there is a short example

This is a very common structure in Hebrew:

• location + יש
  • thing

For example:

• בבית יש ספרים = There are books in the house

The negative form is אין:

• בנספח אין דוגמה = There is no example in the appendix

Again, Hebrew adjectives usually come after the noun.

So:

• דוגמה = example
• קצרה = short

Together:

• דוגמה קצרה = a short example

Also, קצרה is feminine singular because דוגמה is feminine singular. Hebrew adjectives must agree with the noun.

Compare:

• ספר קצר = a short book
• דוגמה קצרה = a short example

נספח usually means appendix, attachment, or addendum, especially in documents.

So in this sentence, ובנספח means:

• and in the appendix
• or possibly and in the attachment, depending on context

Like בסעיף, the form בנספח may include an absorbed definite article after the preposition:

• ב + הנספח → בנספח

So in context, it often means in the appendix rather than in an appendix.

Yes, it sounds fairly formal or neutral, especially the vocabulary:

• סעיף = section / clause
• נספח = appendix / attachment
• כתוב = it is written / it says

This is the kind of Hebrew you might see in:

• instructions
• contracts
• forms
• academic materials
• official documents

It is perfectly natural Hebrew, but it belongs more to written or informational style than to everyday casual conversation.