La palabra del día: Fojas

Feminine plural noun. From the Latin folium. Page. In Legal Spanish, a file has not páginas but fojas. E.g. …de acuerdo con la declaración testimonial a fojas 25, according to the testimonial statement on page 25. Note that we say a fojas (plural) and not en foja, but if we are speaking about a book we say en página 25.
Another twist, a escritura, a contract and an administrative file have no fojas nor páginas but folios (masculine noun). E.g. Como atesta la firma en folio 4, as as attested by the signature on page 4.
In all cases you can still say página, but it’s not what a lawyer would do. dc