Display emoticons as images filter
The filter Display emoticons as images converts emoticon (smiley) characters into images.
Emoticons may be added using the button Insert emoticon in the Text editor or by typing the emoticon characters e.g.
Site administration settings
A site administrator can enable / disable the 'Display emoticons as images' filter site-wide in Settings > Site administration > Plugins > Filters > Manage filters.
The 'Display emoticons as images' settings (Settings > Site administration > Plugins > Filters > Display emoticons as images) enable the site administrator to select which formats the filter is applied to. By default, the filter is applied to Moodle auto-format, HTML format and Markdown format.
A site administrator can customize the list of available emoticons in Settings > Site administration > Appearence > HTML settings. See Emoticon images for details.