Custom multi-language dictionary files (.mld) contain translations of user-defined texts that are not contained in the default multi-language dictionary files supplied with AutoCAD Mechanical toolset.
You can use any of the following options to create custom multi-language dictionary files:
The custom multi-language dictionary file uses the file name of the current drawing, and is saved to the directory you specified in the project path of the Online Translation Options dialog box (accessible through the Defaults button in the Online Translation dialog box). This file saves all text strings (new rules) specified during the current working session.