(It's not a manual, it's an ACS4.2 installation file. Under \ACSUtilities\Support\Clean, there are 53M source files for ACS4.2 special uninstall tool. Since my maximum upload permission is 10M, it is divided into 6 parts to upload. Download the 6 parts well, so that the data can be decompressed normally, otherwise, you will make mistakes in decompression, remember!)