Annotatio III §.III: Formula words speak of action or use — Paul’s ‘bread we break’ is communion of Christ’s body, not bread outside the use
The words clearly speak of action or use — as Paul says expressly of use or action: the bread we break is the communion of the body of Christ.
That cannot mean bread outside the use; take it this way: this bread is the thing by which communion of Christ’s body is exhibited to us — and so speak the older writers and chief Fathers in the Church.
Latin
Verba clarè loquuntur de actione seu usu: sicut & Paulus expressè de usu seu Actione inquit: Panis quem frangimus, est Communio Corporis Christi. Id enim de Pane extra usum intelligi non potest, sed hôc modo accipiendum est; hic Panis est res illa, quâ nobis Communio Corporis Christi exhibetur, & sic loquuntur veteres scriptores & Patres praecipui in Ecclesia.