Is it possible to import the Microsoft Word AutoText file (apparently called "building blocks.dotm") to LibreOffice? If yes, how?
Background information:
Go to Tools -> AutoText and then under the AutoText dropdown button, click Import.
LibreOffice expects a Word document or template (.doc or .dot) that contains AutoText. Documentation is at https://help.libreoffice.org/index.php?title=Writer/AutoText#Import.