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maybe @Eggymatrix ment swapping.
The OS tracks which memory-pages are used least and will swap them out when active programs need more ram than available.

A Teletype
I just like the sound and the oldschool vibe of these machines.
But the ‘realistic’ aspect shrinks as they are hard to get.

If you are interested in molecular-biology:
Molecule of the Month

It would be nice to have a kind of central hub where all the lastest resources are listed.
I could be updated by the community.

Well… one can dream.