function filterCSV( contentFilename ){

        if ( contentFilename.endsWith(".csv") ) { 
                console.log('it is a CSV file', contentFilename)

		// mereology option
		let openingOptions = filesWithMetadata[contentFilename].openingOptions
		// can be used via e.g. showFile("https://fabien.benetou.fr/?action=source",{ mereology:"whole"})

		fetch( contentFilename )
		.then( r => r.text() ).then( r => {
			// console.log('CSV', r)

			console.log( "mereology", openingOptions.mereology )
			switch( openingOptions.mereology ) {
				case "whole":
					addNewNote(r, "0 1.4 -.8")
				break;
				default:
					r.split('\n').map( (c,i) => addNewNote(c, "0 "+(1+i/10)+" -.8") )
			} 
					
			AFRAME.scenes[0].emit('csvloaded', contentFilename)
			// to use the event consider :
			//AFRAME.scenes[0].addEventListener("csvloaded", e => console.log(e))
		})
        }
        applyNextFilter( contentFilename )
}

sequentialFilters.push( filterCSV )