bottom groups processes by name, and aggregates their sys stats like memory. This is useful for multi-process programs (eg: Chrome, VS Code).
e - expand/collapse current widget
tab - toggle grouping on/off
m - sort by memory. On Mac OS, this is the same as "Real Mem" in Activity Monitor.
% - toggle between values and percentages for the Mem column.
P - toggle between process name and full command.
/ - toggle search panel, use memb>100000000 to filter to processes with more than 100MiB NB: this filters at the individual process level, not at the aggregate level.
Using sysinfo to calculate memory.