'What exactly does this dot mean in ARM assembly?

This is my ARM assembly code:

AREA MyData, DATA
V SPACE 4
N EQU .

I've noticed the next memory address, after the block reserved by SPACE, is stored in N thanks to EQU and the dot.

However, I haven't found any information about what exactly that dot is and what it does. Does anyone know what its "technical" name is?

assembly arm armasm

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