- A VSE system file that reflects the software additions, corrections, and deletions that have been made to a given VSE system. This file is accessed by the MSHP component of VSE /Advanced Functions.; 一种虚存扩充操作系统(VSE)的系统文件，反映了对给定的VSE系统曾做过的补充、更改和删除。利用VSE /AF的维护系统历史程序(MSHP)可以 访问该文件。
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