This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 彾 is uncertain. It visually combines 彳 (step) with 令, but the original meaning and component relationship are unclear.
With no clear meaning, focus on the shape: a step 彳 beside 令, like a command given while walking.
For レイ, imagine a person stepping forward to obey a command: the command is a ray of light (レイ) guiding the way.
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