MT4编辑器metaedit 509版本纯净版。可以用这个版本进行老的mt4指标编辑打包为ex4文件在新版MT4内使用。(MT4 editor metaedit 509 version of pure edition. This version can be used for the old MT4 index editor to be packaged as the EX4 file used in the new version of MT4.)