Sessions and branches

A project groups related sources and work. A session is one conversation within it. Use a new session for a separate question, and a branch when the new question should retain a selected conversation history. Neither is a replacement for checking which files and execution records the new conversation can actually access.

Create, name and return to a session

Open the project, select New under Sessions, enter a request and send it. Check the project name first: a new session belongs to that project. Select a session row to return to it; read its status before assuming the task has finished.

Example Name an RNA-seq quality-check session

For the completed GSE60450 run, we used Edit… to save this information:

Field	Example value	Constraint
Title	RNA-seq count matrix - validation and sample QC	Up to 80 characters; the editor shows the count
Description	Validate the public GSE60450 matrix and retain descriptive QC outputs with source integrity checks.	Up to 1,000 characters
Save	Persist the changes	Check the sidebar title after closing
Cancel / Close	Leave without applying the draft	This does not cancel the research run

Choose Pin from the row menu to keep the session in the Pinned group. Unpin returns it to the ordinary list. Pinning organizes access; it does not keep a kernel alive or protect a session from deletion.

Hover over a session to check its number as well as its title and project. The number helps distinguish similarly named conversations; confirm the selected row before editing or deleting it.

Save a reading bookmark

Use private reading bookmarks to save a passage or PDF region with a note, then return to it from Bookmarks in this session. Saving a bookmark does not send the passage to the agent.

Read the session menu correctly

Action	Result	Check
Edit…	Change the title/description	Correct row and saved label
Download all artifacts	Open an artifact selection/download flow	This session's saved files and requested selection
View notebook	Open the session's execution view	Owner, language and actual runs
Export conversation…	Export the conversation through the offered format/options	Transcript export is distinct from an artifact/Notebook bundle
Archive	Hide the session from active navigation	It remains recoverable in Settings → Archived
Delete	Open a permanent-deletion confirmation	Read exactly which data is affected; Cancel preserves it

Branch after a completed result

Worked example Branch a completed QC session for sample annotation

Suppose you want to discuss downstream sample annotation while keeping the finished raw-count QC conversation intact.

1. Open the completed answer in the original session.
2. Select Branch in new session beneath that answer.
3. Confirm a new session row appears. It can initially share the original title.
4. Rename it to GSE60450 - follow-up interpretation with Edit….
5. Inspect the inherited transcript before submitting the next request. Reference the original project artifacts explicitly where needed.

A branch preserves selected conversation history, but it does not recreate the original live kernel. For a copied activity labeled code shown or a blocked historical link, open the original artifact from the project's Files panel and inspect its producing session.

Branch availability depends on the message and framework state. Side Chat is separate. A new side discussion inherits this conversation's current model and reasoning effort; you can select a different model for its next send.

Revise an earlier message

Edit message on an earlier user request creates a message revision, rather than erasing the entire history. Read the revised text and attachments before submitting. Use Previous/Next message revision where available to inspect alternatives. Later visible context depends on the selected path; an old answer should not be treated as the response to a newly edited request.

Worked example Revise a request for QC metric definitions

For this QC example, choose Edit message on the completed question, replace the one-sentence request with four definitions, and choose Send. Revision controls are unavailable while the new response is running. Once it finishes, Previous message revision returns to 1/2 with the original question and answer; Next message revision returns to the revised answer. A further correction to the exact CSV field names produced 3/3. In this Codex-subscription session, the two reports saved before the revised message remained available and their downloaded bytes were unchanged.

The same revision path was also exercised with OpenCode and a local model: the revised request produced the new phrase, Previous restored the original reply, and Next restored the revised reply. This connection-only example does not establish that tool state or external side effects are reversed.

Cancel leaves without submitting the edit. Send requests a new answer; check it before continuing. Use a follow-up to correct the next action or a branch for a separately named investigation.

Research packages

To hand over conversation branches, files and evidence together, use a .science research package. The guide covers export options, import and inspection, read-only sessions and transfer recovery.

Export conversations and research files

Choose Export → Export conversation… from the session row menu to share a research discussion. First use Edit… to give the session a concise title: PDF export uses that title, and a long automatic title can consume much of the first page.

Control	Action and result
Format → PDF / Markdown	PDF for reading and printing; Markdown for further editing
Entire conversation	Export the current conversation branch
Selected	Show turn checkboxes, initially empty; the counter follows your selection
Select all	Select every listed turn
Export PDF / Export Markdown	Open the system save dialog; unavailable when no turns are selected
Cancel	Close without creating an export

Worked example Export only the final GSE60450 QC definitions turn

In GSE60450 — Methods and claim audit, selecting the final turn produced a one-page PDF containing only that request and its four metric definitions. Earlier discussion was absent. The entire-conversation PDF was also reopened and checked. The earlier selected-turn Markdown export began with its selected follow-up. A turn can contain several assistant messages, so selecting one turn need not export exactly two messages.

Conversation export does not replace research-file download. Result links may refer to internal application records that a recipient cannot open. Download the CSV, figures or reports separately when those files are part of the handover.

Download session artifacts

Choose Download all artifacts, select the files, choose Download N artifacts, and pick a destination folder. This entry saves separate files. The two downloaded Methods and claim-audit Markdown files were reopened and matched their saved artifacts byte for byte.

Download a project file bundle

Open the project-name menu at the top left → Download artifacts…. Files are grouped under Generated and Uploads. All are initially selected; use Uncheck all, choose the files to hand over, and save the ZIP.

Choose Cancel in the system save dialog to abandon that save; your file selection remains available. Once writing starts, the app disables cancellation and closing. Wait for the result; cancelling the destination dialog is different from stopping a write in progress.

If only some files downloaded, restore access to the unavailable source files, then select the complete intended handover and download again. Saving to the same ZIP name replaces the previous archive. Selecting only failed files creates a new bundle containing only those files; it does not append them to the earlier ZIP.

Open the downloaded ZIP and compare file counts, names and contents under generated/ and uploads/ with your selection before sharing. This bundle is not a backup of the full project, conversation history, Notebook kernel or runtime.

Archive and restore a finished branch

Choose Archive on the intended branch, then open Settings → Archived → Sessions. Check the project and archive time before selecting Restore. Confirm that the branch returns to active navigation and its saved contents open; the original conversation is separate.

For an archived project, use its Manage entry and inspect the project's sessions. See Storage and archived work for the difference between archive, restoration, deletion and storage relocation. A session's disappearance from the active list is not evidence that disk space was reclaimed.

Sources: session editor, workspace implementation.