m:2> help

help topic1 topic2 ...  prints help on topic1, topic2, etc.

	Help is available for all of the built-in functions, procedures, and
	commands.  Type `what' to get a list of these.  Help is also available
	for topics:  

	array     function  index     intro     matrix    news     narg
	operators reduce    transpose vector	  

m:3> what

CMDS:    cd      clear   diary   disasm  echo    help    history list   
         load    pwd     quit    read    save    what    who     write  

FUNS:    IO      abs     acos    all     any     asin    atan    atan2  
         ceil    cleanup cols    cos     cosh    diag    eps     erf    
         erfc    exp     eye     fabs    feval   find    floor   format 
         log     log10   max     min     norm    null    ones    prnum  
         prod    prtol   round   round2  rand    reshape rows    sin    
         sinh    sizeof  sort    sqrt    sum     svd     tan     tanh   
         trunc   trunc2  undef   zeros  

PROCS:   debug   dump    exit    hplot   plot    plot2d  print   printf 
         qr      srand  

m:4>