This menu concerns the settings for the content editor, namely the function “Copy content of text version from HTML version”. Since when using this function, for example, all images and links are listed in the text version, which looks relatively unfavorable, you can preset the procedure and rules for format synchronization.
The "Ignore images" checkbox can be selected if you do not want to have every image listed in the text version.
Here you can set whether links should be output directly, which characters should be used as reference brackets or brackets, a line should be displayed in front of the link listing and whether a label should be used for links. If so, please mark the corresponding checkbox and enter the label in the field to the right of it.