COMMENT ⊗   VALID 00005 PAGES
C REC  PAGE   DESCRIPTION
C00001 00001
C00002 00002	{$NOMAIN	Editor: Statement printing routine Aux routines }
C00023 00003	{ Externally defined routines from elsewhere: }
C00025 00004	(* putStmnt aux routine to handle some more of the statement types *)
C00033 00005	(* putst2: main part *)
C00039 ENDMK
C⊗;
{$NOMAIN	Editor: Statement printing routine Aux routines }

const

	(* Constants from EDIT *)
      	maxLines = 28;		(* smaller on the 11 than on the 10 *)
      	maxPPLines = 18;
      	maxBpts = 25;
      	maxTBpts = 20;	(* max could be exceeded by huge case stmnt *)
	listinglength = 2000;	(* Length of Listingarray *)

(* Random type declarations for OMSI/SAIL compatibility *)

type

  byte = 0..255;	(* doesn't really belong here, but... *)
  ascii = char; 
  atext = text;

{ Define all the pointer types here }

strngp = ↑strng;
statementp = ↑statement;
varidefp = ↑varidef;
nodep = ↑node;
identp = ↑ident;
reswordp = ↑resword;
pdbp = ↑pdb;
envheaderp = ↑envheader;
enventryp = ↑enventry;
environp = ↑environment;
cmoncbp = ↑cmoncb;
linerecp = ↑linerec;
cursorpp = ↑cursorp;	{Ron's style, not mine}

(* This one is used whenever a pointer is needed for which the 	*)
(* definition is missing from this file; naturally, all 	*)
(* pointers use the same space 					*)

dump = ↑integer;
token = array[1..4] of integer;

(* datatype definitions *)

datatypes = (pconstype, varitype, svaltype, vectype, rottype, transtype,
	     frametype, eventtype, strngtype, labeltype, proctype, arraytype,
	     reftype, valtype, cmontype, nulltype, undeftype,
	     dimensiontype, mactype, macargtype, freevartype);

scalar = real;

cstring = packed array [1..10] of ascii;
c4str = packed array [1..4] of ascii;
c5str = packed array [1..5] of ascii;
c20str = packed array [1..20] of ascii;
linestr = packed array [1..130] of ascii;

strng = record
	  next: strngp;
	  ch: cstring;
	end;


(* statement definitions *)

stmntypes = (progtype, blocktype, coblocktype, endtype, coendtype,
		fortype, iftype, whiletype, untiltype, casetype,
		calltype, returntype,
		printtype, prompttype, pausetype, aborttype, assigntype,
		signaltype, waittype, enabletype, disabletype, cmtype,
		affixtype, unfixtype,
		movetype, operatetype, opentype, closetype, centertype,
		stoptype, retrytype,
		requiretype, definetype, macrotype, commenttype, dimdeftype,
		setbasetype, wristtype, tovaltype, declaretype, emptytype);
		(* more??? *)

statement = packed record
		next, last: statementp; (* ↑ to lexical tokens? *)
		stlab: varidefp;
		exprs: nodep;	(* any expressions used by this statement *)
		nlines: integer;
		bpt: boolean;
		case stype: stmntypes of

    movetype,
    operatetype,
    opentype,
    closetype,
    centertype,
    stoptype:	    (cf, clauses: nodep);
    cmtype:	    (oncond: nodep; conclusion: statementp;
			deferCm, exprCm: boolean; cdef: varidefp);
		end;

(* auxiliary definitions: variable, etc. *)

varidef = packed record
	    next,dnext: varidefp;
	    name: identp;
	    level: 0..255;	(* environment level *)
	    offset: 0..255;	(* environment offset *)
	    dtype: varidefp;	(* to hold the dimension info *)
	    tbits: 0..15;  (* special type bits: array = 1, proc = 2, ref = 4 & ? *)
	    dbits: 0..15;	(* for use by debugger/interpreter *)
	    case vtype: datatypes of
  arraytype:  (a: nodep);
  proctype:   (p: nodep);
  labeltype,
  cmontype:   (s: statementp);
  mactype:    (mdef: statementp);
  macargtype: (marg: dump);
  pconstype:  (c: nodep);
  dimensiontype: (dim: nodep);
	  end;

(* definition of the ubiquitous NODE record *)

nodetypes = (exprnode, leafnode, listnode, clistnode, colistnode, forvalnode,
		deprnode, viaptnode, apprnode, destnode, durnode,
		sfacnode, wobblenode, swtnode, nullingnode, wristnode, cwnode,
		arrivalnode, departingnode,
		ffnode, forcenode, stiffnode, gathernode, cmonnode, errornode,
		calcnode, arraydefnode, bnddefnode, bndvalnode,
		waitlistnode, procdefnode, tlistnode, dimnode, commentnode);

exprtypes =  (	svalop,					(* scalar operators *)
		sltop, sleop, seqop, sgeop, sgtop, sneop,	(* relations *)
		notop, orop, xorop, andop, eqvop,		(* logical *)
		saddop, ssubop, smulop, sdivop, snegop, sabsop, (* scalar ops *)
		sexpop, maxop, minop, intop, idivop, modop,
		sqrtop, logop, expop, timeop,			(* functions *)
		sinop, cosop, tanop, asinop, acosop, atan2op,	(* trig *)
		vdotop, vmagnop, tmagnop,
		vecop,					(* vector operators *)
		vmakeop, unitvop, vaddop, vsubop, crossvop, vnegop,
		svmulop, vsmulop, vsdivop, tvmulop, wrtop,
		tposop, taxisop,
		transop,				(* trans operators *)
		tmakeop, torientop, ttmulop, tvaddop, tvsubop, tinvrtop,
		vsaxwrop, constrop, ftofop, deproachop, fmakeop, vmkfrcop,
		ioop,					(* i/o operators *)
		queryop, inscalarop,
		specop,					(* special operators *)
		arefop, callop, grinchop, macroop, vmop, adcop, dacop,
		badop,
		addop, subop, negop, mulop, divop, absop); (* for parsing *)

leaftypes = pconstype..strngtype;

reltypes = sltop..sgtop;
forcetypes = (force,absforce,torque,abstorque,angvelocity);

node = record
	next: nodep;
	case ntype: nodetypes of
    exprnode:	(op: exprtypes; arg1, arg2, arg3: nodep; elength: integer);
    leafnode:	(case ltype: leaftypes of
	varitype:  (vari: varidefp; vid: identp);
	pconstype: (cname: varidefp; pcval: nodep);
	svaltype:  (s: scalar; wid: integer);
	vectype:   (v: dump);
	transtype: (t: dump);
	strngtype: (length: integer; str: strngp) ); (* also used by commentnodes *)
    errornode:	(eexpr: nodep);
    deprnode,
    apprnode,
    destnode:	(loc: nodep; code: statementp);
    viaptnode:	(vlist: boolean; via,duration,velocity: nodep; vcode: statementp);
    durnode:	(durrel: reltypes; durval: nodep);
    sfacnode,
    wobblenode,
    swtnode:	(clval: nodep);
    nullingnode,
    wristnode,
    cwnode:	(notp: boolean); (* true = nonulling/zero wrist/counter_clockwise *)
    ffnode:	(ff: nodep; csys, pdef: boolean); (* true = world, false = hand *)
    forcenode:	(ftype: forcetypes; frel: reltypes; fval, fvec, fframe: nodep);
    stiffnode:	(fv, mv, coc: nodep);
    gathernode:	(gbits: integer);
    cmonnode:	(cmon: statementp; errhandlerp: boolean);
    calcnode: 	(rigid, frame1: boolean; other: dump; case tvarp: boolean of 
		    false: (tval: dump); true: (tvar: enventryp) );
	end;

(* records for parser: ident, token, resword *)

ident = record
	    next: identp;
	    length: integer;
	    name: strngp;
	    predefined: varidefp;
	  end;


tokentypes = (reswdtype, identtype, constype, comnttype, delimtype, labeldeftype,
		macpartype);

constypes = svaltype..strngtype;

reswdtypes = (stmnttype, filtype, clsetype, decltype, optype, edittype);

filtypes = (abouttype,alongtype,attype,bytype,defertype,dotype,elsetype,
		errmodestype,fromtype,handtype,intype,nonrigidlytype,rigidlytype,
		sourcefiletype,steptype,thentype,totype,untltype,viatype,
		withtype,worldtype,zeroedtype,oftype,wheretype,nowaittype,
		ontype,offtype,ppsizetype,collecttype,alltype,lextype);

clsetypes = (approachtype,arrivaltype,departuretype,departingtype,durationtype,
		errortype,forcetype,forceframetype,forcewristtype,gathertype,
		nildeproachtype,nonullingtype,nullingtype,stiffnesstype,
		torquetype,velocitytype,wobbletype,
		cwtype,ccwtype,stopwaittimetype,angularvelocitytype,
		fxtype,fytype,fztype,mxtype,mytype,mztype,
		t1type,t2type,t3type,t4type,t5type,t6type,tbltype);

edittypes = (getcmd,savecmd,insertcmd,renamecmd,startcmd,gocmd,proceedcmd,
		stepcmd,sstepcmd,nstepcmd,gstepcmd,executecmd,setcmd,tracecmd,
		breakcmd,unbreakcmd,tbreakcmd,definecmd,markcmd,unmarkcmd,
		popcmd);

resword = record
	  next: reswordp;
	  length: integer;
	  name: strngp;
	  case rtype: reswdtypes of
	stmnttype:  (stmnt: stmntypes);
	filtype:    (filler: filtypes);
	clsetype:   (clause: clsetypes);
	decltype:   (decl: datatypes);
	optype:	    (op: exprtypes);
	edittype:  (ed: edittypes);
	  end;

(* process descriptor blocks & environment record definitions *)

queuetypes = (nullqueue,nowrunning,runqueue,inputqueue,eventqueue,sleepqueue,
		forcewait,devicewait,joinwait,proccall);

pdb = packed record
	nextpdb,next: pdbp;	(* for list of all/active pdb's *)
	level: 0..255;		(* lexical level *)
	mode: 0..255;		(* expression/statement/sub-statement *)
	priority: 0..255;
	status: queuetypes;	(* what are we doing *)
	env: envheaderp;
	spc: statementp;	(* current statement *)
	epc: nodep;		(* current expression (if any) *)
	sp: nodep;		(* intermediate value stack *)
	cm: cmoncbp;		(* if we're a cmon point to our definition *)
	mech: dump;		(* current device being used *)
	linenum: integer;	(* used by editor/debugger *)
	 case procp: boolean of	(* true if we're a procedure *)
true:  (opdb: pdbp;		(* pdb to restore when procedure exits *)
	pdef: nodep);		(* procedure definition node *)
false: (evt: dump;		(* event to signal when process goes away *)
	sdef: statementp);	(* first statement where process was defined *)
      end;


envheader = packed record
	      parent: envheaderp;
	      env: array [0..4] of environp;
	      varcnt: 0..255;		(* # of variables in use ??? *)
		case procp: boolean of  (* true if we're a procedure *)
	true: (proc: nodep);
	false:(block: statementp);
	    end;


enventry = record
	    case etype: datatypes of
  svaltype:  (s: scalar);
  vectype:   (v: dump);
  transtype: (t: dump);
  frametype: (f: dump);
  eventtype: (evt: dump);
  strngtype: (length: integer; str: strngp);
  cmontype:  (c: cmoncbp);
  proctype:  (p: nodep; penv: envheaderp);
  reftype:   (r: enventryp);
  arraytype: (a: envheaderp; bnds: nodep);
	   end;


environment = record
		next: environp;
		vals: array [0..9] of enventryp;
	      end;


cmoncb = record
	   running, enabled: boolean;		(* cmon's status *)
	   cmon: statementp;
	   pdb: pdbp;
	   evt: dump;
	   fbits: integer;			(* bits for force sensing *)
	   oldcmon: cmoncbp;			(* for debugger *)
	 end;

(* print related records: *)

cursorp = record
	  cline,ind: integer;
	  case stmntp: boolean of
  true:    (st: statementp);
  false:   (nd: nodep);
	 end;

linerec = record
	next: linerecp;
	start,length: integer
       end;

listingarray = packed array [0..listinglength] of ascii;


(* Global variables *)

var 
	(* From ALMAIN *)
    b:boolean;		
    ch:ascii;
    ltime: real;

	(* From PARSE *)
    reswords: array [0..26] of reswordp;
    idents: array [0..26] of identp;
    macrostack: array [1..10] of dump;
    curmacstack: array [1..10] of varidefp;
    macrodepth: integer;
    curchar, maxchar, curline: integer;
    curBlock,newDeclarations: statementp;
    curProc: varidefp;
    pnode: nodep;
    nodim, distancedim, timedim, angledim,
      forcedim, torquedim, veldim, angveldim: varidefp;
    fvstiffdim, mvstiffdim: nodep;
(*  filedepth: integer;
    curpage: integer;
    sysVars,unVars: varidefp;
    errcount: integer;
    outerBlock: statementp;
    curVariable: varidefp;
    curMotion: statementp;
    endOk,coendOk: integer;
    moveLevel: integer;
    curErrhandler, curCmon: statementp;	*)
    d1: array[1..13] of dump;
    endOfLine, backup, expandmacros, flushcomments, dimCheck: boolean;
(*  semiseen, shownline: boolean;
    eofError: boolean;
    inMove,inCoblock: boolean;	*)
    d2,d3,d4,d5,d6: boolean;
    curtoken: token;
    file1,file2,file3,file4,file5: atext;
    line: linestr;

	(* From INTERP *)
    curInt, activeInts, readQueue, allPdbs: pdbp;
(*  curEnv, sysEnv: envheaderp;
    clkQueue: nodep;
    allEvents: dump;
    STLevel: integer;		
    etime: integer;		
    curtime: integer; 		
    stime: integer;		
    msg: dump;			
    inputp: integer;		*)
    d10: array[1..10] of integer;
    debugLevel: integer;
    tSingleThreadMode: boolean;
    resched, running, escapeI, singleThreadMode: boolean;
    msgp: boolean;		(* flag set if any messages pending *)
    inputReady: boolean;
    inputLine: array [1..20] of ascii;

	(* From EDIT *)
    lines: array [1..maxLines] of linerecp; 
    ppLines: array [1..maxPPLines] of linerecp;	
    marks: array [1..20] of integer;
    cursorStack: array [1..15] of cursorp;
    bpts: array [1..maxBpts] of statementp;
    tbpts: array [1..maxTBpts] of statementp;
    debugPdbs: array [0..10] of pdbp;
    screenheight,dispHeight: integer;
    ppBufp,oppBufp,ppOffset,ppSize,nmarks: integer;
    lbufp,cursor,ocur,cursorLine,fieldnum,lineNum,findLine,pcLine: integer;
    firstDline,topDline,botDline,firstLine,lastLine: integer;
    freeLines,oldLines: linerecp;
    findStmnt: statementp;
    nbpts,ntbpts: integer;
    eCurInt: pdbp;
    dProg: statementp;	
    smartTerminal: boolean; 
    setUp,setExpr,setCursor,dontPrint,outFilep,newVarOk,collect: boolean;
    backUp: boolean;			
    eSingleThreadMode: boolean;	
    listing: listingarray;
    lbuf: array [1..160] of ascii;
    ppBuf: array [1..100] of ascii;
    outFile: atext;
    curToken: token;			

	(* Various device & variable pointers *)
    speedfactor: enventryp;
    barm: dump;

	(* Various constant pointers *)
    xhat,yhat,zhat,nilvect: dump;
    niltrans: dump;
    bpark, ypark, gpark, rpark: dump;		(* arm park positions *)

{ Externally defined routines from elsewhere: }

	(* From EAUX1A *)
procedure pushStmnt(s: statementp; indent: integer);		external;
procedure pushNode(n: nodep);					external;

	(* From EPUT *)
procedure putChar(ch: ascii);					external;
procedure put5(ch: c5str; length: integer);			external;
procedure put10(ch: cstring; length: integer);			external;
procedure putLine;						external;
procedure putReal(s: real);					external;
procedure putInt(r: real);					external;
procedure putStrng(length: integer; s: strngp);			external;
function getExprLength(n: nodep): integer;			external;

	(* From EPUTST *)
procedure putexpr(n: nodep; opp: integer);			external;
procedure newline(indent: integer);				external;
procedure outExpr(n: nodep);					external;

	(* From EROOT *)
procedure ep2putstmnt(s: statementp; indent, plevel: integer);	external;


procedure ePs2Get; external;
procedure ePs2Get; begin end;
(* putStmnt aux routine to handle some more of the statement types *)

procedure putst2(s: statementp; indent, plevel: integer; var l: integer); external;
procedure putst2;
 var i: integer; n,nv: nodep; b: boolean;


(* Aux routines: *)

 function codeLength(st: statementp): integer;
  begin
  if st↑.stype = signaltype then codeLength := 1
   else codeLength := st↑.conclusion↑.nlines;
  end;

 procedure putClause(cl: nodep);
  var cnt, bits: integer; b: boolean;
  begin
  with cl↑ do
   case ntype of
durnode: begin
	 put10('duration  ',9);
	 if durrel <= sleop then put5('<=   ',3)
	  else if durrel = seqop then putchar('=')
	  else put5('>=   ',2);
	 outExpr(durval);
	 end;
velocitynode,
wobblenode,
sfacnode,
swtnode:
	 begin
	 if ntype = sfacnode then
	   begin put10('speed_fact',10); put5('or = ',5) end
	  else if ntype = wobblenode then put10('wobble =  ',9)
	  else if ntype = velocitynode then
	   begin put10('velocity =',10); putChar(' ') end
	  else begin put10('stop_wait_',10); put10('time =    ',7) end;
	 outExpr(clval);
	 end;
loadnode:begin
	 put10('load =    ',7);
	 outExpr(loadval);
	 if loadvec <> nil then
	   begin
	   put5(' at  ',4);
	   outExpr(loadvec);
	   end;
	 if lcsys then put10(' in world ',9)
	  else put10(' in hand  ',8);
	 end;
elbownode:
	 begin
	 put5('elbow',5);
	 if notp then put5(' up  ',3) else put5(' down',5);
	 end;
shouldernode:
	 begin
	 if notp then put5('right',5) else put5('left ',4);
	 put10(' shoulder ',9);
	 end;
linearnode:
	 begin
	 if notp then put10('linear    ',7)
	  else begin put10('joint_spac',10); put5('e    ',2) end;
	 put10('motion    ',6);
	 end;
flipnode,
nullingnode:
	 begin
	 if notp then put5('no   ',3);
	 if ntype = flipnode then put5('flip ',4) else put10('nulling   ',7);
	 end;
cwnode:
	 begin
	 if notp then put10('counter_  ',8);
	 put10('clockwise ',9);
	 end;
wrtnode: begin
	 put10('respect to',10); putChar(' ');
	 outExpr(loc);
	 end;
apprnode,
deprnode:begin
	 if ntype = apprnode then put10('approach  ',8)
	  else put10('departure ',9);
	 put5(' =   ',3);
	 if loc = nil then begin put10('nildeproac',10); putchar('h') end
	  else outExpr(loc);
	 if code <> nil then
	  begin
	  put5(' then',5);
	  if code↑.stype = signaltype then ep2PutStmnt(code,indent+4,plevel)
	   else ep2PutStmnt(code↑.conclusion,indent+4,plevel);
	  end;
	 end;
wristnode:
	 begin
	 put10('force_wris',10); put5('t    ',2);
	 if notp then put5('not  ',4);
	 put10('zeroed    ',6);
	 end;
ffnode:	 begin
	 put10('force_fram',10); put5('e =  ',4);
	 outExpr(ff);
	 if csys then put10(' in world ',9)
	  else put10(' in hand  ',8);
	 end;
forcenode:
	 begin
	 case ftype of
   force:     put5('force',5);
   absforce:  put10('|force|   ',7);	
   torque:    put10('torque    ',6);
   abstorque: put10('|torque|  ',8);	
   angvelocity: begin put10('angular_ve',10); put10('locity    ',6) end;
   otherwise {do nothing - ??};
	  end;
	 if frel <= sleop then put5(' <   ',3)
	  else if frel = seqop then put5(' =   ',3)
	  else put5(' >=  ',4);
	 outExpr(fval);
	 if fvec <> nil then
	  begin
	  if ftype <= absforce then put10(' along    ',7)
	   else put10(' about    ',7);
	  outExpr(fvec);
	  end;
	 if fframe <> nil then
	  begin
	  put5(' of  ',4);
	  outExpr(fframe↑.ff);
	  if fframe↑.csys then put10(' in world ',9)
	   else put10(' in hand  ',8);
	  end;
	 end;
stiffnode:
	 begin
	 put10('stiffness ',10); put5('= (  ',3);
	 if (fv↑.ntype = exprnode) and (fv↑.op = vmakeop) and
	    (mv↑.ntype = exprnode) and (mv↑.op = vmakeop) then	(* 6 scalar form *)
	   begin
	   outExpr(fv↑.arg1);
	   putchar(',');
	   outExpr(fv↑.arg2);
	   putchar(',');
	   outExpr(fv↑.arg3);
	   putchar(',');
	   outExpr(mv↑.arg1);
	   putchar(',');
	   outExpr(mv↑.arg2);
	   putchar(',');
	   outExpr(mv↑.arg3);
	   end
	  else
	   begin
	   outExpr(fv);
	   putchar(',');
	   outExpr(mv);
	   end;
	 putchar(')');
	 if cocff <> nil then
	  begin
	  put10(' about    ',7);
	  outExpr(cocff↑.ff);
	  if cocff↑.csys then put10(' in world ',9)
	   else put10(' in hand  ',8);
	  end;
	 end;
gathernode:
	 begin
	 put10('gather = (',10);
	 bits := gbits;
	 cnt := 0;
	 while bits <> 0 do
	  begin
	  b := false;
	  if odd(bits) then
	   if cnt = 12 then put5('tbl  ',3)
	    else
	     begin
	     if cnt >= 6 then
	       begin
	       putchar('t');
	       putchar(chr(ord('1') + cnt - 6));
	       end
	      else
	       begin
	       if cnt <= 2 then putchar('f') else putchar('m');
	       putchar(chr(ord('x') + cnt mod 3));
	       end;
	     b := true;
	     end;
	  bits := bits div 2;
	  cnt := cnt + 1;
	  if b and (bits <> 0) then putchar(',');
	  end;
	 putchar(')');
	 end;
otherwise {do nothing};
    end;
  end;
(* putst2: main part *)

begin
with s↑ do 
    case stype of
cmtype:		begin
		if deferCm then put10('defer on  ',9)
		 else put5('on   ',3);
		with oncond↑ do
		 if (ntype = exprnode) or (ntype = leafnode) then outExpr(oncond)
		  else if ntype = arrivalnode then put10('arrival   ',7)
		  else if ntype = departingnode then put10('departing ',9)
		  else if ntype = errornode then
		   begin
		   put10('error =   ',8);
		   outExpr(eexpr);
		   end
		  else putClause(oncond);
		put5(' do  ',3);
		ep2PutStmnt(conclusion,indent+2,plevel);
		end;
movetype,
jtmovetype,
operatetype,
opentype,
closetype,
centertype,
floattype:	begin
		if (stype = movetype) or (stype = jtmovetype) then put5('move ',5)
		 else if stype = operatetype then put10('operate   ',8)
		 else if stype = opentype then put5('open ',5)
		 else if stype = closetype then put10('close	 ',6)
		 else if stype = centertype then put10('center	  ',7)
		 else put10('float     ',6);
		outExpr(cf);
		n := clauses;
		if n <> nil then
		  with n↑ do
		   if (ntype = ffnode) and pdef then n := next;
		if n = nil then b := false
		 else b := n↑.ntype = destnode;	(* print it on same line *)
		if b then putchar(' ');
		while n <> nil do	(* print out the clauses *)
		 with n↑ do
		  begin
		  if not ((((ntype=viaptnode) or (ntype=byptnode)) and vlist)
			  or b) then
		    begin
		    if setCursor then
		      begin
		      if (ntype = viaptnode) or (ntype = byptnode) then
			begin
			i := 1;
			nv := vclauses;
			while nv <> nil do
			 begin i := i + 1; nv := nv↑.next end;
			if vcode <> nil then i := codeLength(vcode) + i + 1;
			end
		       else if ((ntype = deprnode) or (ntype = apprnode)) and
			       (code <> nil) then i := codeLength(code) + 2
		       else if ntype = cmonnode then i := cmon↑.nlines
		       else i := 1;
		      if (curLine < cursorLine) and
			 (cursorLine <= curLine + i) then
			begin
			pushNode(n);
			cursorStack[cursor].ind := indent + 2;
			end;
		      end;
		    if ntype <> cmonnode then newline(indent+2);
		    end;
		  b := false;
		  if ntype = destnode then
		   begin
		   put5('to   ',3);
		   outExpr(loc);
		   end
		  else if (ntype = viaptnode) or (ntype = byptnode) then
		   begin
		   if vlist then put5(',    ',2)
		    else if ntype = viaptnode then put5('via  ',4)
		    else put5('by   ',3);
		   outExpr(via);
		   nv := vclauses;
		   i := 2;
		   while nv <> nil do
		    begin
		    newline(indent+4);
		    if curLine = cursorLine then fieldNum := i;
		    put10('where     ',6);
		    putClause(nv);
		    i := i + 1;
		    nv := nv↑.next;
		    end;
		   if vcode <> nil then
		    begin
		    newline(indent+4);
		    if curLine = cursorLine then fieldNum := i;
		    put5('then ',4);
		    if vcode↑.stype = signaltype then
		      ep2PutStmnt(vcode,indent+6,plevel)
		     else ep2PutStmnt(vcode↑.conclusion,indent+6,plevel);
		    end;
		   end
		  else if ntype = cmonnode then
		   begin
		   ep2PutStmnt(cmon,indent+2,plevel);
		   end
		  else if ntype = commentnode then
		   begin
		   putStrng(length,str);
		   end
		  else
		   begin
		   if (ntype <> ffnode) or (not pdef) then
		     begin
		     if ntype <> cwnode then put5('with ',5);
		     putClause(n);
		     end;
		   end;
		 n := next;
		 end;
		end;
(* more??? *)
else		begin put10('Oh no!  2 ',10); put10('Bad ovlay!',10); end;
     end;
end;