script termination from module: exit vs. break

hi, have script below loads module writes line.

runme.ps1 contents:

import-module .\mymod.psm1
write-host "from runme.ps1"

mymod.psm1 contents:

exit

running script outputs:

from runme.ps1

this indicates exit in module not terminate script, exits module load.  why?  isn't supposed exit script?

just comparison, i've done same in ruby , python.  both exit when exit() called , output nothing.

and can't find reference exit command if can send me links...

importing module not execute module.  loads memory.

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\_(ツ)_/

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