Expression: "...presence is punctuated..."

[Tom]

Hi

I read this sentence in Da Vinci Code, by Dan Brown.(Page:24). Could you please tell me what the word punctuate means here? I do not think it means?

1-His captivating personality is punctuated by an unusually low, baritone speaking voice, which his female students describe as "chocolate for the ears".

Does punctuate mean beautify here?

Tom

[Yankee]

Hi Tom

I'd go for "accentuated" as a synonym/meaning.

Amy