⌂ Footnotes / Remarks in the footer

Place a numbered annotation in the footer. First we define a scheme-function to add an annotation (add-foot!) wich adds a markup to a foot-item-list and returns a label-event and a TextScriptEvent. Now we define a music-function, wich utilizes the scheme-function. Then we define a markup-command, wich returns the footnotes/annotations of the current page. Now we can use this markup-command in [odd|even]FooterMarkup in the paper block.