To edit the title of a file, select it in the tree and press the Edit title button in the Preview Pane. In the popup window, modify the title and press OK.
To edit the name of a file, select it in the tree and press the Edit name button in the Preview pane. In the popup window, modify the file name and press OK.
For files involved in reuse (see “Reuse files”), changing the name of the original file or of any added file:
breaks the connections with all added files or with the original file, respectively,
changes the original file’s
icon back to 
and the icons for the added files to 
changes the file path in the Details tab to show only the file name, and
the file content is reported as missing.