I notice you're asking about a "patched" version of the Ren'Py editor in relation to "Deep Story" — likely referring to DDLC (Doki Doki Literature Club) or a mod/fan game using that engine.
A typical “save patched” editor for Ren’Py involves: renpy editor save patched
Auto-Save Functionality: A new auto-save feature has been integrated into the editor. This ensures that the work is saved automatically at regular intervals, preventing data loss in case of unexpected crashes or interruptions. I notice you're asking about a "patched" version
Moving or deleting existing scenes or labels can prevent a save from loading if the save points to a part of the script that no longer exists. Patching Strategies for Save Compatibility renpy editor save patched