The WYSIWYG Text-Area field allows formatting to the font of set fields. This is helpful for memos and notes to enhance a portion of the note.
When selecting a Field Type for new fields or when changing a field's type, select the WYSIWYG Text-Area. There are limitations to converting this to another field type.
WYSIWYG | Allow Internal Toolbar and Options on Public Forms
The WYSIWYG behaves differently on public forms; mainly it has less options in the toolbar and has the "paste image from clipboard" functionality disabled for security reasons.
You can use the Field Property "WYSIWYG | Allow Internal Toolbar and Options on Public Forms" to allow certain fields to have the full internal options on the Public forms."