The function set-default-editor-pane-blink-rate
sets the default to use for the editor pane cursor blinking rate. This default value is used when editor-pane-blink-rate returns nil
.
Initially the setting is if this call has been made:
(set-default-editor-pane-blink-rate nil)
This means that the native blink rate will be used.
The argument blink-rate is interpreted as a blinking rate as described in editor-pane-blink-rate.
CAPI User Guide and Reference Manual (Windows version) - 3 Aug 2017