In early 2025, FlexRadio updated our WinKeyer Emulator and CWX Prosigns to bring them inline with the official WinKeyer specs.
Those specifications are found here: https://www.hamcrafters2.com/files/WK3_Datasheet_v1.3.pdf
Key among those specifications is the list of CW "Prosigns" and what keystrokes will send them in the Winkeyer Emulator and CWX.
This chart, from page 17 of the WinKeyer Specs, identifies the keystrokes and the Prosigns that are sent with them:
This list supersedes the entries in the current SmartSDR User Guide.