%s VERVANG
WS	("\n"|" "|"\t")+
FS	"<!--"{WS}?(f|F)(s|S){WS}?"-->"
FE	"<!--"{WS}?(f|F)(e|E){WS}?"-->"
P	"<"(p|P)({WS}[^<>]*)?">"
HR	"<"(h|H)(r|R)({WS}[^<>]*)?">"
H1	"<"(h|H)1({WS}[^<>]*)?">"
TAG	"<"[^<>]*">"
%%
{FS}		{printf("\n"); BEGIN(VERVANG);}
<VERVANG>{FE}	{printf("\n\n"); BEGIN(INITIAL);}
<VERVANG>{P}	printf("\n\n");
<VERVANG>{H1}	printf("        ");
<VERVANG>{HR}	printf("\n\n   ---------\n");
<VERVANG>{WS}	printf(" ");
<VERVANG>{TAG}	;
<VERVANG>.	ECHO;
.|"\n"		;