in tcl_cmds.c [1067:1077]
static int r_set_headers_out(int objc, Tcl_Obj *CONST objv[])
{
if (objc != 4) {
Tcl_WrongNumArgs(interp, 2, objv, "header_name header");
return TCL_ERROR;
}
apr_table_set(_r->headers_out, Tcl_GetString(objv[2]), Tcl_GetString(objv[3]));
return TCL_OK;
}