Add P_ATCODES definition

exec/load/sbbsdefs.js

@@ -214,6 +214,7 @@ var   P_MARKUP		=(1<<16);	/* Support StyleCodes/Rich/StructuredText	*/
 var   P_HIDEMARKS	=(1<<17);	/* Hide the mark-up tags					*/
 var   P_REMOTE		=(1<<18);	/* Only print when online == ON_REMOTE		*/
 var   P_INDENT		=(1<<19);	/* Indent lines to current cursor column	*/
+var   P_ATCODES		=(1<<20);	/* Trusted @-codes in formatted string		*/
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