Can you explain what the SHR field means in the htop utility in Linux?

In the htop utility in Linux, the SHR (Shared Memory) field shows the amount of memory (in kilobytes) that a process shares with other processes. This is part of virtual memory that is shared, for example, through the use of shared libraries or other memory sharing mechanisms.

That is, if several processes use the same library, the memory occupied by this library is counted in the SHR field for each process, but it is not actually duplicated in physical memory.

This helps to understand how much memory is actually allocated to the process and how much is shared with others.