-  check/fix get_cmd_line_metrics for good
-  allow defining instances to display [-i]
-  opt to write cols per row with stdout output [-k]
-  opt to swap cols and rows (e.g., compare ps vs sar)
-  -Q/-B/-Y to override per-metric settings unit/scale
-  shorten unit display count / sec -> count/s -> c/s if needed
-  opt to output in short format (see pmdumptext -F / pmNumberStr) [-m/-M]
-  opt to support pmdumptext -X like output (or shorten inst names if needed)
-  support rate display also for non-cumulative counters
-  support displaying raw/rate as per given unit
-  (re)add runtime directive to config file
-  containers support
-  add JSON output support
-  add XML output support (like sadf)
-  add XLS output support (like sar2xls)
-  look for config in ./, ~/.pcp, ~/, /etc/pcp or so
-  possibly add more command line switch sanity checking
-  modularize code to allow creating custom output plugins
-    (e.g. pcp2graphite type socket, top-like output, separate pcp2zabbix)
-  pmtime support (?) [-g]
-  per-metric precision (?)
-  copy metric set spec support (?)
-  includedir config file support (?)
-  generalised daemon startup support (?)
-  multi-sheet support for xlsx output (?)
-  add option to prevent truncating string output (?)
-  generalized zabbix_interval (limit writes to archive) (?)
-  support for multiple output targets (e.g. archive+stdout) (?)
-  optionally ignore incompatible/unsupported metrics rather than abort [-I] (?)

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In use / reserved cmd line options:
AaBbcCdDeEfFGhHKLloOpPqQrsStTuUVwxyYzZ

Tentatively planned:
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Available:
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