While you are editing the wiki, you may want to insert an image or file that is not yet stored in the wiki. If the file exists already, you can add an external link. In AirSend, you can upload or create a file and save it in the wiki without having to leave the wiki editor.
The left panel of the wiki editor shows the files and images that are already uploaded to the channel as well as buttons for uploading a file and creating a file or folder.
The original file for the wiki, index.md, is listed with the other files in the channel. The .md extension indicates that it is a Markdown file, a plain text file that may include Markdown formatting. It remains the first page of the wiki if you add additional pages.