_For custom models that are based on previous-generation models_, the type of words from the custom language model's words resource on which to train the model: * all (the default) trains the model on all new words, regardless of whether they were extracted from corpora or grammars or were added or modified by the user. * user trains the model only on custom words that were added or modified by the user directly. The model is not trained on new words extracted from corpora or grammars. _For custom models that are based on next-generation models_, the service ignores the parameter. The words resource contains only custom words that the user adds or modifies directly, so the parameter is unnecessary.
_For custom models that are based on previous-generation models_, the type of words from the custom language model's words resource on which to train the model: *
all(the default) trains the model on all new words, regardless of whether they were extracted from corpora or grammars or were added or modified by the user. *usertrains the model only on custom words that were added or modified by the user directly. The model is not trained on new words extracted from corpora or grammars. _For custom models that are based on next-generation models_, the service ignores the parameter. The words resource contains only custom words that the user adds or modifies directly, so the parameter is unnecessary.