-" T<ints>,<start> = time closure created",
-" ints: no. of interval bands plotted (default 18)",
-" start: seconds after which intervals start (default 0.0)",
-" A subset of closures may be selected by the attached cost centre using:",
-" -c{mod:lab,mod:lab...}, specific module:label cost centre(s)",
-" -m{mod,mod...} all cost centres from the specified modules(s)",
-" -g{grp,grp...} all cost centres from the specified group(s)",
-" Selections can also be made by description, type, kind and age:",
-" -d{des,des...} closures with specified closure descriptions",
-" -y{typ,typ...} closures with specified type descriptions",
-" -k{knd,knd...} closures of the specified kinds",
-" -a<age> closures which survived <age> complete intervals",
-" The selection logic used is summarised as follows:",
-" ([-c] or [-m] or [-g]) and ([-d] or [-y] or [-k]) and [-a]",
-" where an option is true if not specified",
+" A subset of closures may be selected thusly:",
+" -hc{cc, cc ...} specific cost centre(s) (NOT STACKS!)",
+" -hm{mod,mod...} all cost centres from the specified modules(s)",
+" -hd{des,des...} closures with specified closure descriptions",
+" -hy{typ,typ...} closures with specified type descriptions",
+"",
+" -i<msec> Time between heap samples (msec, default: 20)",