use of underscores in identifiers has been turned on).
if( ch == EOI ) eofseen = 1;
else PushBack();
+ /* dtrg: removed to allow Pascal programs to access system routines
+ * (necessary to make them do anything useful). What's this for,
+ * anyway? */
+
+#if 0
if( buf[0] == '_' ) lexerror("underscore starts identifier");
+#endif
+
tk->TOK_IDF = id = str2idf(buf, 1);
return tk->tk_symb = id->id_reserved ? id->id_reserved : IDENT;
}