mdb_inc_indent() and mdb_dec_indent()

ulong_t mdb_inc_indent(ulong_t n);
ulong_t mdb_dec_indent(ulong_t n);

These functions increment and decrement the numbers of columns that MDB will auto-indent with white space before printing a line of output. The size of the delta is specified by n, a number of columns. Each function returns the previous absolute value of the indent. Attempts to decrement the indent below zero have no effect. Following a call to either function, subsequent calls to mdb_printf() are indented appropriately. If the dcmd completes or is forcibly terminated by the user, the indent is restored automatically to its default setting by the debugger.