box diagram
lahterskeem
= Chapin chart = Nassi-Shneiderman chart
olemus
ISO/IEC 2382:
juhtimisvooskeem, mis koosneb järjestikuseid samme, kordamist ja tingimuslauseid esitavatest jadastatudja pesastatud lahtritest
= a control flow diagram consisting of a sequenced and nested boxes that represent sequential steps, repetition, and conditional statements