+TIP: The long options may be abbreviated, as long as the abbreviation is not
+ambiguous. Eg. '--k' will be the same as '--keep_src_list', and '--pac' be
+'--packages'.
+
+[WARNING]
+=====================================================================
+
+- To specify the optional parameter for switches that accept them, the
+optional argument must be written directly after the long option name,
+separated by `=' (without space).
+
+- the commandline parsing of grml-debootstrap does not validate the provided