.TH "pfstag" 1
.SH NAME
pfstag \- Set or remove tags to/from pfs stream
.SH SYNOPSIS
.B pfstag
[--set [channel:]name=value] [--remove [channel:]name]
.SH DESCRIPTION
Use this command to set or remove tags from the pfs-stream. Tags are
used to add additional information to pfs frames and they are in the
format: 'name=value'. To learn more about tags, read 'Specification of
the PFS File Format'.

Tags are set/removed to/from all pfs frames in the stream.

Note that currently only OpenEXR file format supports tags. 
.SH OPTIONS
.TP
--set [channel:]name=value], -s [channel:]name=value], --add [channel:]name=value]
Change existing or add a new tag of the given name. If no channel is given,
tags are added to the frame.

.TP
--remove [channel:]name], -r [channel:]name]
Remove tag of the given name. Ignore if the tag does not exist. If no
channel is given, tags are removed from the frame.

.SH EXAMPLES
.TP
pfsin memorial.hdr | pfstag --add "EXTRA_INFO=foo" | pfsout memorial_ei.exr

Add tag "EXTRA_INFO=foo" to the memorial image and save it as memorial_ei.exr.

.SH "SEE ALSO"
.BR pfsin (1)
.BR pfsout (1)
.SH BUGS
Please report bugs and comments to Rafal Mantiuk
<mantiuk@mpi-sb.mpg.de>.