Files with the .BPM extension can contain dictionary data – words and expressions, along with their translations. It is unique to the translation software SDL Trados and is based on other files used during translation – memory files .SLDTM and .TMX.

The data contained in the file are the source for the automatic suggestion functions – they allow the software to give suggestions during the manual translation, which speeds up the process. The SDL Trados software also allows the adding of own dictionaries to the AutoSuggest function mentioned above.