Change -dg description.
standard conformance. It might be useful as C2MIR implements some GCC extensions of C
* Option `-O<n>` is used to set up MIR-generator optimization level. The optimization levels are described
in documentation for MIR generator API function `MIR_gen_set_optimize_level`
- * Option `-dg` is used for debuging MIR-generator. It results in dumping debug information
- about MIR-generator work to `stderr`
+ * Option `-dg[<level>]` is used for debugging MIR-generator. It results in dumping debug information
+ about MIR-generator work to `stderr` according to the debug level. If the level is omitted,
+ it means maximal level
* Besides C files, MIR textual files with suffix `.mir` and MIR
binary files with suffix `.bmir` can be given on the command line.
In this case these MIR files are read and added to generated MIR code
