In Etrian Odyssey, is there a visual cue for spotting hidden doors?

In Etrian Odyssey, is there a visual cue for spotting hidden doors? - From above of crop anonymous oculist in sterile gloves measuring modern eyewear with optical tool on white background

I'm specifically referring to Etrian Odyssey 1 on the DS. Is there a visual detail that I should be on the lookout for that marks the location of secret doors? For example a certain colored plant, or detail on the floor, etc.

As I am playing through now, I just use brute force by turning my party towards every wall and looking for the "Check (a)" prompt.






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Etrian Odyssey - 16 - Secret Area




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