Kommandoen er tydelig.

Because Norwegian usually marks the by adding it to the end of the noun.

• kommando = a command / command
• kommandoen = the command

This is called the suffixed definite article.

For many masculine nouns, the definite singular ending is -en:

• en bil = a car
• bilen = the car

So here:

• en kommando = a command
• kommandoen = the command

Kommando is usually treated as a masculine noun:

• en kommando
• kommandoen

In Norwegian, noun gender matters because it affects articles and endings.

Er is the present tense of å være (to be).

So:

• å være = to be
• er = am / are / is

In Norwegian, the same form er is used with all subjects in the present tense:

• jeg er = I am
• du er = you are
• han er = he is
• kommandoen er = the command is

That is simpler than English, which changes between am / are / is.

Here, tydelig is a predicative adjective, not one placed directly before the noun.

Compare:

• Kommandoen er tydelig. = The command is clear.
• en tydelig kommando = a clear command

When an adjective comes after a verb like er, it is often in predicative position. In this sentence, tydelig stays in its basic form.

Before the noun, adjective agreement works differently:

• en tydelig kommando
• et tydelig signal
• tydelige kommandoer

So the lack of extra ending here is normal.

Tydelig usually means something like:

• clear
• distinct
• easy to understand
• sometimes obvious

In Kommandoen er tydelig, the most natural meaning is probably The command is clear.

Depending on context, tydelig can describe:

• speech that is easy to hear or understand
• instructions that are clearly expressed
• something obvious or noticeable

It exists and is correct, but it often sounds a bit more specific or formal than English command.

It can be used in contexts like:

• military commands
• computer commands
• fixed instructions

In everyday speech, Norwegian may also use other words depending on context, such as:

• beskjed = message / instruction
• ordre = order
• instruksjon = instruction

So kommandoen er tydelig is grammatical and natural in the right context, but the exact noun chosen depends on what kind of command is meant.

This is the normal Norwegian sentence pattern for a simple statement:

subject + verb + complement

So:

• Kommandoen = subject
• er = verb
• tydelig = complement

This is very similar to English:

• The command is clear

Norwegian main clauses usually keep the finite verb in the second position, and this sentence follows that normal pattern.

A helpful approximate pronunciation is:

kom-MAN-do-en

A few points:

• the stress is usually on -man-
• the final -en is the definite ending
• the o in kommando is not the same as a long English oh in all accents, so it may sound a bit different from what an English speaker expects

If you say it slowly, think of it as:

• kommando + en

The y sound in Norwegian is often difficult for English speakers.

A rough guide for tydelig is:

TY-de-lig

But that y is not like the English y in yes. It is a vowel sound, somewhat like a rounded version of ee.

A few tips:

• Keep your tongue in a position similar to ee
• Round your lips more than you would for English ee

Also:

• the g at the end may sound softer than an English speaker expects, depending on accent and speed

Even if your y is not perfect at first, Norwegians will usually still understand you.

Yes, if the context already makes it clear what it refers to.

• Kommandoen er tydelig. = The command is clear.
• Den er tydelig. = It is clear.

Because kommando is a common-gender noun, the pronoun is den.

Use den when the noun has already been mentioned or is obvious from context.

Yes, depending on the nuance you want.

Some possibilities:

• Kommandoen er klar. = The command is clear / ready / unambiguous
• Kommandoen er lett å forstå. = The command is easy to understand
• Kommandoen er presis. = The command is precise

But these are not always exact synonyms:

• tydelig emphasizes clarity or distinctness
• klar can mean clear, but also ready or plain
• presis emphasizes precision

So tydelig is a good choice when you want to stress that the command is expressed clearly.

Yes. In English, the is a separate word:

• the command

In Norwegian, the definiteness is usually attached to the noun:

• kommandoen

This is one of the first big structural differences English speakers notice.

If you add an adjective before a definite noun, Norwegian often uses double definiteness:

• den tydelige kommandoen = the clear command

So compare:

• kommandoen er tydelig = the command is clear
• den tydelige kommandoen = the clear command

That difference is very important in Norwegian grammar.