Session & History
Sessions, macros, undo/redo.
Management
Save / Open Project (File menu)
What it is. Saves the workspace (outputs + Log) to a reusable .stios file via File > Save Project; restore it with File > Open Project (legacy .sty projects still open).
Session Info
What it is. Shows what's currently loaded in this session.
Show Diff
What it is. Shows differences between the current state and a previous snapshot.
Macros
Record / Stop Macro
What it is. Records a sequence of actions for later replay.
Save / Load Macro
What it is. Save a macro to disk. Load and apply it to another dataset.
Replay
What it is. Execute recorded actions in sequence.
Undo / Redo
What it is. Revert or re-apply the last operation on the dataset or session.