字は

as for the written character(s), handwriting; the way someone’s writing looks

→ 字
phrase Rare #24,314
as for the written character(s) 字 means written characters or handwriting; は marks it as the topic.
JA: この字は何と読むのでしょう?
EN: How do you read this character?

字はどうする?

What should we do about the characters?

— 大人は判ってくれない (1959)

言えあの字は誰が書いてあげたのだ?

Tell me—who wrote those characters for you?

— 紅夢 (1991)

字は読める?

Can you read these characters?

— イル・ポスティーノ (1994)

字は?

How do you write it?

— シティ・オブ・ゴッド (2002)

「忙しい」と言う字は心が亡くなると書く。

The word “busy” is written with the characters for “heart” and “to perish.”

字は書けるこれを見てくれ

I can write—look at this.

— どん底作家の人生に幸あれ! (2019)

似合わないわね字は読めんの?

That doesn't suit you. Can't you read?

— 最強のふたり (2011)

phrase Rare #44,602
handwriting; the way someone’s writing looks Refers to the appearance or style of someone’s written characters.
JA: 彼女の字はきれいだ。
EN: Her handwriting is beautiful.

あなたの書く字は私に似ている。

Your handwriting looks like mine.

彼女の字はきれいだ。

Her handwriting is beautiful.

この字は、解読不能です。

This handwriting is illegible.

彼女の字は読めない。

I can't read her handwriting.