Secret(?) inline icons or symbols for button labels with <%...> syntax

[yonder]

Button/Menu label, description, tags and sequences

<#ffffff> Foreground color <kbd> Outlined key drawing <b> Bold <i> Italic <u> Underline \n Newline \t Tab <%sp:2> Horizontal spacing (2 pixels) <%vsp:2> Vertical spacing (2 pixels) Few questions. I suspect there is a way to set backgr…