Extract a particular set of record types type from the cvs
history. The types are indicated by single letters,
which you may specify in combination.
Certain commands have a single record type:
F- release
O- checkout
T- rtag
One of four record types may result from an update:
C- A merge was necessary but collisions were
detected (requiring manual merging).
G- A merge was necessary and it succeeded.
U- A working file was copied from the repository.
W- The working copy of a file was deleted during
update (because it was gone from the repository).
One of three record types results from commit:
A- A file was added for the first time.
M- A file was modified.
R- A file was removed.