# 1. register --depth N matches postings as usual but clips account names to N
hledger -f - register aa --depth 1
<<<
2010/1/1 x
  a:aa:aaa      1
  b
>>>
2010-01-01 x                    a                                1             1
>>>=0

# 2. separate postings remain separate
hledger -f - register aa --depth 2
<<<
2010/1/1 x
  a:aa      1
  b:bb:bbb

2010/1/1 y
  a:aa      1
  b:bb:bbb

2010/1/2 z
  a:aa      1
  b:bb:bbb
>>>
2010-01-01 x                    a:aa                             1             1
2010-01-01 y                    a:aa                             1             2
2010-01-02 z                    a:aa                             1             3
>>>=0

# 3. with a reporting interval, all postings are aggregated under each (clipped) account
hledger -f - register aa --depth 1 --daily
<<<
2010/1/1 x
  a:aa      1
  b:bb:bbb

2010/1/1 y
  a:aa      1
  b:bb:bbb

2010/1/2 z
  a:aa      1
  b:bb:bbb
>>>
2010/01/01              a                                        2             2
2010/01/02              a                                        1             3
>>>=0

# 4. with --cleared
hledger -f - register a --depth 1 --cleared
<<<
2012/1/1 *
  (a:aa)      1
>>>
2012-01-01                      (a)                              1             1
>>>2
>>>=0

# 5. depth 0 aggregates everything into a single line
hledger -f - register --depth 0 --daily a b
<<<
2010/1/1 x
  a:aa      1
  b:bb      2
  c:cc

2010/1/1 y
  a:aa      1
  b:bb      2
  c:cc

2010/1/2 z
  a:aa      1
  b:bb      2
  c:cc
>>>
2010/01/01              ...                                      6             6
2010/01/02              ...                                      3             9
>>>=0