π€μ μhandshake볡μ¬νκΈ°μ΄λͺ¨μ§ μ 보카ν κ³ λ¦¬μ¬λ/μ μ€μ²μ λμ½λU+1F91Dν€μλμ μ, ν©μ, κ±°λKeywordshandshake, deal, agree