Supported File Formats. OpenXLIFF Filters can generate XLIFF 1.2, 2.0, 2.1 and 2.2 from these formats: General ... (optional) folder containing configuration files for the XML filter -ignoretc: ...

My basic recommendation for learning how line breaks work is to experiment and discover -- hit <Enter> once (i.e., insert one newline), then hit it twice (i.e., insert two newlines), see what happens.