A language implementation normally includes an EBS package with all the necessary prerecorded phrases in a female voice a (male voice is available for US English only). A phrase list (.pl) file defines the phrase names and phrase numbers for all the phrases in the EBS package. The first line of the .pl file must have the language listed at the end in brackets. The language name must be the same as used in the language package (the same as the subdirectory name in the /vs/bin/ag/formats directory).
An example of the first line of a .pl file is:
225 Standard speech in male voice [US_English]
The purpose of identifying the EBS language is to prevent its inadvertent use for the wrong language.