help:

--version

show program's version number and exit

-h, --help

show this help message and exit

subcommands:

Annotation operation

add

Adds field/value pairs to header annotations

collapse

Collapses header annotations with multiple entries

copy

Copies header annotation fields

delete

Deletes fields from header annotations

expand

Expands annotation fields with multiple values

merge

Merge multiple annotations fields into a single field

rename

Renames header annotation fields

table

Writes sequence headers to a table

output files:

reheader-pass

reads passing annotation operation and modified accordingly.

reheader-fail

raw reads failing annotation operation.

headers

tab delimited table of the selected annotations.

output annotation fields:

<user defined>

annotation fields specified by the -f argument.