Specify the files scheme in the Project Settings, Files tab.
Click Configure across necessary file and select a content part that should be translated. Click Save & Import to proceed.
Allows to make all nodes content and attributes translatable.
Allows to make specific nodes content and attributes translatable.
File structure is depicted with the help of icons:
Checking this option, the long texts will be splitted into sentences. However, it disables the possibility to upload existing translations that you may have.