41：如何打開老版本Micro/Win創建的項目文件？ 在正版STEP7 Micro/WIN軟件光盤中，都可在Old Realeses文件夾中找到V2.1版本的Micro/WIN安裝軟件，此版本的Micro/WIN可打開以前老版本創建的項目文件。

Zhang et al (2004) tested the concrete strength of more than 10 old bridges located in the Central South and the South China regions by means of hammer, core samples drilled and ultrasonic wave methods

The user needs to rename all old restart input files to prepin.<extension> before opening them in the GUI.