though PDA ui features are somewhat generic, it would be good to
*start* with trying to implement/describe mmmravs...

FORM 1000 AT (2 2 156 156)
<form id=1000>
  <at x=2 y=2 w=156 h=156/>
USABLE
  <usable/>  <!-- or usable in attlist of form? -->
MODAL
  <modal/>
HELPID 1000
  <help id=1000/>
MENUID 1000
  <menu id=1000/>
BEGIN
  <formcontent> <!-- unneeded??? -->
	TITLE "Mary Chung's"
  <title>Mary Chung's</title>
	LABEL "Mary Chung's Menu (ALPHA VERSION)" 2000 CENTER 15
  <label id=2000><at center h=15/>Mary Chung's Menu (ALPHA VERSION)</label>
  <!-- or should that be x=center? -->
	LABEL "Raw Total: " 2100 10 PrevBottom
  <label id=2000><at x=10 y=prevbottom>Raw Total: </label>
	LABEL "$0.00 ($0.00)          " 2101 PrevRight PrevTop
	LABEL "Tax: " 2200 10 PrevBottom
	LABEL "$0.00                  " 2201 PrevRight PrevTop
	LABEL " Tip: " 2300 PrevRight PrevTop
	LABEL "$0.00                  " 2301 PrevRight PrevTop
	LABEL "Total: " 2400 10 PrevBottom
	LABEL "$0.00 ($0.00)          " 2401 PrevRight PrevTop

poplist(3000,soup?,"suan" "wonton" "H&S" "H&S w/wonton" "Egg Drop")
	POPUPTRIGGER "$2" ID $1 AT (10 PrevTop+13 62 AUTO) LEFTANCHOR
	LIST "$2" $3 ID `eval(($1) + 1)' AT (PrevLeft PrevTop 52 1) VISIBLEITEMS `eval(1+len(patsubst($3, "[^"]*" *, X)))' NONUSABLE
	POPUPLIST ID $1 `eval(($1) + 1)'

  <popuptrigger id=3000><at x=10 y=prevtop+13 w=62 h=auto leftanchor>soup?</popuptrigger>
  <list id=3001 visibleitems=6 nonusable>
	<at x=prevleft y=prevtop w=52 h=1>
	<item>soup?</item>
	<item>suan</item>
	<item>wonton</item>
	<item>H&S</item>
	<item>H&S w/wonton</item>
	<item>Egg Drop</item>
  </list>	
  <popuplist id=3002 trigger=3000/>