1# 2024-05-12-isa-changelog 2 3This document describes change log with the following modifications: 4 5* Version 6* Bytecode instructions 7 8## Version 9We update version from 12.0.1.0 to 12.0.2.0 10 11## Bytecode instructions 12To support using top-level sendable class in other sendable classes as closure variable, the sendable lexical environment is implemented and the following bytecode instructions are added to create and operate it. 13 - callruntime.newsendableenv 14 - callruntime.widenewsendableenv 15 - callruntime.stsendablevar 16 - callruntime.widestsendablevar 17 - callruntime.ldsendablevar 18 - callruntime.wideldsendablevar 19