To view files that are currently attached to any item, select the item in the Features or Entities panels. The files attached to the selected item will be listed.
To view the full image or full web page for any attached file, either double click on the image or web page icon or thumbnail, or right click on the media item name and choose Open. The file will be displayed at full size in a popup window.
Media files that have been attached to an item may be unattached from that item by selecting the file in the Media panel’s file list and clicking the Remove Media button, or right-clicking on the file in the appropriate directory and choosing Remove. The file will be removed from the currently selected item, but will not be deleted from the Media directory.
You may delete media files from the Media directory by right-clicking on the file in the appropriate directory and choosing Delete. The file will be removed from the currently selected item and from any other items to which it has been attached, then deleted from the Media directory.
Note
Deleting web page files from the HTML directory may cause broken links on other pages. Lucid does not check for this. Use a Link Checker application to ensure your keys HTML content doesn't have any broken links.
For a great free open source link checker see https://wummel.github.io/linkchecker/