- * @param h handle to mesh.
- * @param regex string with the regular expression describing local services.
+ * @param h Handle to mesh.
+ * @param regex String with the regular expression describing local services.
+ * @param compression_characters How many characters can be assigned to one
+ * edge of the graph. The bigger the variability
+ * of the data, the smaller this parameter should
+ * be (down to 1).
+ * For maximum compression, use strlen (regex)
+ * or 0 (special value). Use with care!