The key hint displays the key value of the "Exit Ship" key binding when it should display the value of the "Activate Module" key
from keyboard.cfg:
ENTER_SHIP = NUMPADENTER //Exit Ship ACTIVATE = Z //Activate Module
This is likely a leftover from some earlier restructuring, but it should be fixed nonetheless, and at the same time, the exposed variable should probably be renamed to EXIT_SHIP to avoid further confusion.
Launch game, enter OPTIONS screen -> CONTROLS tab -> KEYBOARD subtab
under the "Character Controls" heading, set "Activate Module" to some key KEY_A
under the "Ship Controls" heading, set "Exit Ship" to some different key KEY_B
apply the settings, enter a universe if you haven't already, and look at a ship core block
The hint says "KEY_B Enter Ship Core" although you are in "character control" mode, not in "ship control" mode, you don't intend to exit a ship, and pressing KEY_B doesn't actually enter the ship no matter how hard and often you press the key (and correctly so, since it should only ever exit the ship)
Instead it should say "KEY_A Enter Ship Core" because you are in "Character Mode", and you intend to activate the ship core, and KEY_A actually does what the hint says
As a side note, the keys to enter and exit a ship would benefit from being assigned different values by default IMO to prevent accidents... it's gotten better since the introduction of the "popup detach warning"
G_MUST_CONFIRM_DETACHEMENT_AT_SPEED = -1.0 //Popup Detach Warning (% server speed, -1 off)
but still... if you do *want* that behaviour, you could always assign them the same value manually.