The booklet is entirely in Latin, and contains the Office of Compline for the entire liturgical year, including the various chants for feasts of the sanctorale and temporale. There are proper tones for chanting the Te lucis hym for various feasts of Our Lord, the Blessed Mother, and the Dominican Saints. In addition, all of the chant is provided for the proper hymns and antiphons that are prayed during Lent, Passiontide, Paschaltide, Ascensiontide and the feast of the Most Holy Trinity.
Interestingly, this edition contains the preces for Compline, which I didn't realize had survived the revisions of St. Pius X. After the Salve nos is prayed, the preces are prayed as follows:
Lord have mercy. Christ have mercy. Lord have mercy.
Then is said in silent:
And lead us not into temptation. ℟. But deliver us from evil.
℣. In peace I will lie down. ℟. And sleep comes at once.
After this is said:
I believe in God, the father almighty...℟. And life everlasting. Amen.
℣. Vouchsafe, O Lord this night. ℟. To keep us without sin.