Created attachment 204770 [details] Sample PPTX Open the attached simple presentation created in PowerPoint. Note how in the sidebar, when nothing is selected and it shows the slide properties, the layout pane has nothing selected. Right now the similar layout in Impress is called 'One Box', in older versions it was called 'Title, Content' (ths is just a change in naming AFAIK), the underlying layout should be the same as PP's, and imported/exported as such. If I'm not mistaken, this is enum 'AUTOLAYOUT_TITLE_CONTENT' in AutoLayout enum type in Impress: https://github.com/LibreOffice/core/blob/master/include/xmloff/autolayout.hxx And in OOXML specification it is ST_SlideLayoutType, the particular one is 'obj (Title and Object)', can be found in one of 'ppt/slideLayouts/slideLayoutX.xml', under 'p:sldLayout' as attribute 'type="obj"'. Both import and export needs to be tested for correctness in the end.