Operative, once your team has completed an episode in the TSTT immersion-space, you unlock the ability to re-tell what happened there. This re-telling is called the memorātiō ("a reminding, a bringing to mind"). Because of the way a Recentius is created, his or her memories are incomplete; each memorātiō you compose restores a piece of memory to your character. You will learn more about this restoration process the first time you encounter it.
You will find the memorātiō tab at the bottom of your Recentius's character sheet.

When to write. Compose and post your memorātiō soon after your team finishes an episode, while the events are fresh. Write in the third person, as usual for the dossier.
What to record. The memorātiō is the record of your Recentius's own path: whom your Recentius met, what they said, what your Recentius saw and found, and where the trail points next. Record what your character witnessed inside the immersion-space. The readings in the CODEX have their own exercises; the memorātiō is for the story you lived.
Why it matters. This operation runs for months, and it is long by design. A name spoken in passing, an object glimpsed once, a line you barely noticed: these things return, sometimes many missions later. Operatives who keep a good memorātiō recognize them when they do. A Recentius who knows where he or she has been is much more likely to know where he or she is going. The better your memorātiōnēs, the higher your awards of Latinity Points and the greater the rewards for your Recentiī inside the immersion-space.
Help remembering. Every episode's ATTUNEMENT section of the CODEX carries a Memorātiō card with questions to walk you back through what happened. Use them to check that your account holds the important details before you post it.
English or Latin. Write in English. The point of the memorātiō is holding the story, and English lets you capture everything you remember without a vocabulary ceiling getting in the way. If you want the extra challenge of composing in Latin, Mission Control welcomes it; for words you do not yet know, consult the dictionaries at Latinitium (Smith & Hall is the English-to-Latin lookup). And your designated Agent is always there to help you shape your Latin. That is what they are for!