/* Generally helpful */
??          <> Help
help        <> Help
quit        <[savefile]> quit; 'Q' for no save
ls          list files
cd          Change directory
set         <var [val]> Set variable
unset       <var> Unset variable
call        macro_file <args> execute a macro
interrupt   interrupt
!           <unix_command> execute unix command (output to otcom window)

/* What's doing? */
status      Show status
temperature <[tset]> request/set CCD temperature
volts       Request voltage status
heartbeat   check on status; update clients

/* Set parameters, dialog to otcom window */
auto        <> Set automatic action
save        <[filename]> Save control params
restore     <[filename]> Restore control params
sformat     <> Set format of CCD readout
sgformat    <> Set format of guide star readout
tparams     <> Set OT tracking parameters
gparams     <> Set telescope guide parameters

/* Data file specs */
fnumber     <fileno> Set running file number
fprefix     <prefix> Set file prefix

/* Exposure times */
etime       <seconds> Set exposure time
gtime       <msec> Set guide exposure time

/* Actually do things */
fgs         <[time]> quick look and find guide stars
go          <[#rep]> Start exposure
resume      Resume interruped exposure
telescope   <[command]> Send telescope command
filter      <[filt]> Set filter (0-3)

/* Do things piecemeal */
clear       <[#rep]> Clear (wipe) CCD
expose      <seconds> Do exposure; set exposure time
shutter     <(open|close)> Command shutter
rc          Read CCD
wfile       Write FITS file

/* Probably not useful to general observer */
tdl         <[pattern]> Test data link
guide_stars <x,y1a x,y1b x,y2a x,y2b | prev> guide star locs
led         <dt { |b|r}> Light led for dt msec

/* Turn on and manage DSP, potentially very dangerous for general user */
df          <[file]> Read DSP file and download
pof         Turn off high voltage
pon         Turn on high voltage

/* Potentially extremely dangerous for general user */
rdm               { |t|u} B:hex[-hex]   read from SDSU memory
wrm               { |t|u} B:hex value   write to SDSU memory
cmd               cmd { |t|u} XXX args   send SDSU command
rewrite_clocks    rewrite horizontal clock tables in DSP memory