(dbx) help
Command syntax: "help <keyword>", <keyword> is one of the following list:
most_used, quit, alias, record, playback, history, lineedit, run,
rerun, stop, step, next, trace, delete, catch, ignore,
cont, return, when, goto, print, printx, printo, printd,
printf, printregs, where, status, whatis, which, whereis, assign,
tag, up, down, func, dump, display, list, search,
edit, file, use, set, setenv, sh, stopi, conti,
stepi, nexti, tracei, listobj, enable, disable, kernel, tlist,
tset, tstack, call, attach, detach, plist, switch, variable,
register, builtin, expression