glide.ui.html.editor.toolbar.line1

ServiceNow property description:

Configures the editing toolbar (first line) for HTML fields. This is a comma-separated list without spaces. Available buttons:
newdocument,bold,italic,underline,strikethrough,justifyleft,justifycenter,justifyright,justifyfull,formatselect,fontselect,fontsizeselect,tablecontrols cut,copy,paste,pastetext,pasteword,search,replace,bullist,numlist,outdent,indent,blockquote,undo,redo,link,unlink,image,cleanup,code, forecolor,backcolor,removeformat,hr,visualaid,sub,sup,charmap,media,preview,spellchecker,fullscreen (fullscreen is not supported on IE)