"Bad programmers worry about the code. Good programmers worry about data structures and their relationships."
w(here): Print a stack trace, with the most recent frame at the bottom. An arrow indicates the “current frame”, which determines the context of most commands.
d(own): Move the current frame one level down in the stack trace (to a newer frame).
u(p): Move the current frame one level up in the stack trace (to an older frame).
b(reak): [ ([filename:]lineno | function) [, condition] ]
tbreak: [ ([filename:]lineno | function) [, condition] ]
cl(ear): [bpnumber [bpnumber …] ]
disable bpnumber: [bpnumber …]
enable bpnumber: [bpnumber …]
ignore bpnumber count:
condition bpnumber condition:
l(ist): [first [,last]]