binding.break (alias for binding.b and debugger per docs. Much more detail in the docs continue next stepup/down (unsure of this) list (where we are in the code) bt (backtrace to show the trace of the steps we have followed)
break <line number> break BookStore#find_by_title (To the start of a specific method in a specific class) break BookStore#find_by_title if: book1.title == "Germinal" break (list the breakpoints) del X (line number from (break command) to remove breakpoint)