anchor.diff:  			}
   ;
   
  -operand
  +operand(int c;)
   	{ register struct symtab *p = 0;} :
  -			{   fputs(",{\"",genc);}
  +			{   fprintf(genc, "%c{\"", c);}
   	[
   	    identifier
   	    		{   if (!p) {
  
positive.code: 			}
  	]?
  			{   while (count++ < maxoperand) {
  				fputs(",{\"\",-1,\"\"}",genc);
  			    }
  			    putc('}',genc);
  			}
  ;
  
negative.code: ;
  
  instruction(int opt;)
  	{ int count = 0;} :
  	opcode(opt)
  			{   if (strcmp(buf,"ANY") != 0) {
  			        fprintf(genc,"\t{\"%s\", {",buf);
  			    }
  			    else fputs("\t{(char *) 0, {",genc);
  			    count = 0;
  			}
  	[
  	    operand(' ')
  	    		{   count = 1;}
  	    [
  	    	OPERAND_SEPARATOR
  			{   count++;}
  	    	SPACE*
  	    	operand(',')
  	    ]*
  	    		{   if (count > maxoperand) {
  			        error("Too many operands");
  