moushikomisho no juusho no ran wa chiisai node, ji o ookiku kakanai hou ga ii desu.

The address field on the application form is small, so it is better not to write the letters too big.

Breakdown of moushikomisho no juusho no ran wa chiisai node, ji o ookiku kakanai hou ga ii desu.

• は: topic particle
• です: to be
• 小ちいさい: small
• を: direct object particle

Questions & Answers about moushikomisho no juusho no ran wa chiisai node, ji o ookiku kakanai hou ga ii desu.

Why are there two の particles in 申込書の住所の欄?

This is a chain of nouns, and each の links one noun to the next.

• 申込書 = application form
• 住所 = address
• 欄 = column / box / field / blank on a form

So:

• 申込書の住所 = the address on the application form
• 申込書の住所の欄 = the address field on the application form

In English, we often translate this chain backwards: the address field of the application form → more naturally, the address field on the application form.

Japanese often stacks nouns like this.

What does 欄 mean here?

欄 means a space, box, field, or section for writing something, especially on a form or document.

So in this sentence, 住所の欄 means:

• the address field
• the box where you write your address

It is a common word in formal written Japanese, especially on forms:

• 氏名欄 = name field
• 住所欄 = address field
• 記入欄 = entry field / space to fill in

Why is there a は after 欄?