function filterVisualMetaJSON( contentFilename ){
        let file = filesWithMetadata[contentFilename]
        if (!file) return

        let contentType = file.contentType

        if ( contentType.includes("json") && contentFilename.endsWith(".visualmetaexport.json")) {
                console.log('it is a visualmeta export file', contentFilename)
		fetch( contentFilename ).then( r => r.json() ).then( json => {
			//console.log( json )

			let titleEl = addNewNote( json["visual-meta-bibtex-self-citation"].article.title, "0 1.8 -.3" )

			json["visual-meta-full-document-text"].text.split("\n").reverse().map( (e, i) => { 
				let el = addNewNote( e, "0 "+(1+i/40)+" -.5" )
				if ( e.startsWith("#") ){
					//el.addEventListener("object3dset", _ => el.setAttribute("font-size", el.getAttribute("font-size")*20 ) )
						// not yet set, events loaded and object3dset do not help
					el.setAttribute("font-size", 0.3)
					el.setAttribute("value", e.replaceAll("#","") )
					// should be a bit more subtle...
				}
			})

			Object.values( json["Glossary"].entries ).map( (e, i) => { let el = addNewNote( e.phrase + ' ' + e.entry, "-1.3 "+(1+i/10)+" -.6" ) })

			Object.values( json["document-headings"] ).reverse().map( (e, i) => { 
				let el = addNewNote( e.name, "-1.1 "+(1+i/10)+" -.6" )
				el.setAttribute("font-size", Number(e.level.replace("level",""))/10 )
				el.addEventListener("object3dset", _ => el.object3D.translateX( 1-Number(e.level.replace("level",""))/10 ) )
				
			})
			AFRAME.scenes[0].emit('visualmetajsonloaded', contentFilename)
			// to use the event consider :
			//AFRAME.scenes[0].addEventListener("visualmetajsonloaded", e => console.log(e))
		})
        }
        applyNextFilter( contentFilename )
}

sequentialFilters.push( filterVisualMetaJSON )