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=item MDItemTags

Flag to extract the OS X metadata item tags (see the "mdls" man page and
L<Image::ExifTool::TagNames/MacOS MDItem Tags> for more information).

=item MissingTagValue

Value for missing tags in tag name expressions (or tags where the advanced
formatting expression returns undef).  If not set, a minor error is issued
for missing values, or the value is set to '' if L</IgnoreMinorErrors> is
set.  Default is undef.

=item NoDups

Flag to remove duplicate items from queued values for List-type tags when
writing.  This applies only to queued values, and doesn't resolve duplicates
with existing values in the file when adding to an existing list.  Default
is undef.

=item NoMandatory

Flag to bypass writing of mandatory EXIF tags.  Default is undef.

=item NoMultiExif

Raise error when attempting to write multi-segment EXIF in a JPEG image.
Default is undef.

=item NoPDFList

Flag to avoid splitting PDF list-type tag values into separate items.
Default is undef.

=item NoWarning[+]

Regular expression to suppress matching warning messages.  For example, a
value of "^Ignored" suppresses all warnings that begin with the word
"Ignored".  Has no other effect on processing, unlike IgnoreMinorWarnings
for some warnings.  Start the expression with "(?i)" for case-insensitive
matching.  Use NoWarning+ to add to existing expressions.  Default is undef.

=item Password

Password for reading/writing password-protected PDF documents.  Ignored if a
password is not required.  Character encoding of the password is determined
by the value of the Charset option at processing time.  Default is undef.

=item Plot

Settings to override defaults for SVG plot feature.  Value is a comma
delimited string of settings, or undef to revert to default settings.
Settings are accumulated if this option is set multiple times.  Commas in
the settings must be escaped as "&#44;".  Valid settings and their default
values are:

  "Type=Line"           - plot type (Line, Scatter or Histogram)
  "Style=Line"          - data style (Line, Marker and/or Fill)
  "NBins=20"            - number of bins for histogram plot
  "Size=800 600"        - width,height of output image
  "Margin=60 15 15 30"  - left,top,right,bottom margins around plot area
  "Legend=0 0"          - x,y offset to shift plot legend
  "TxtPad=10 10"        - padding between text and x,y scale
  "LineSpacing=20"      - spacing between text lines
  "Stroke=1"            - plot stroke width and marker-size scaling
  Title, XLabel, YLabel - plot title and x/y axis labels (no default)
  XMin, XMax            - x axis minimum/maximum (autoscaling if not set)
  YMin, YMax            - y axis minimum/maximum
  Multi                 - flag to draw multiple plots, one for each dataset
  Split                 - flag to split strings of numbers into lists
                          (> 1 to split into lists of N items)
  "Grid=darkgray"       - grid color
  "Text=black"          - color of text and plot border
  "Bkg="                - background color (default is transparent)
  "Cols=red green blue black orange gray fuchsia brown turquoise gold"
                        - colors for plot data
  "Marks=circle square triangle diamond star plus pentagon left down right"
                        - marker-shape names for each dataset

=item PrintConv

Flag to enable automatic print conversion.  Also enables inverse
print conversion for writing.  Default is 1.

=item PrintCSV

Flag to directly print CSV-format output rather than extracting tags
normally.  Currently this feature applies only to GM PDR data (see
L<Image::ExifTool::TagNames/GM Tags>).  Setting this option automatically
sets L</IgnoreTags> to "all", and L</ExtractEmbedded> to 1.  Default is
undef.

=item QuickTimeHandler

Flag set to add an 'mdir' Handler to a newly created Meta box when adding
QuickTime ItemList tags.  Adobe Bridge does not add this Handler, but it is
commonly found in samples from other software, and it has been reported that
Apple QuickTime Player and Photos.apps will ignore ItemList tags if this is
missing.  Default is 1.

=item QuickTimePad

Flag to preserve the padding of some QuickTime atoms when writing.
QuickTime-based Canon CR3 files pad the values of container atoms with null
bytes.  This padding is removed by default when the file is rewritten, but
setting this option to 1 adds padding to preserve the original atom size if
the new atom would be smaller than the original.  Default is undef.

=item QuickTimeUTC

Flag set to assume that QuickTime date/time values are stored as UTC,
causing conversion to local time when they are extracted and from local time
when written.  According to the QuickTime specification date/time values
should be UTC, but many digital cameras store local time instead (presumably
because they don't know the time zone), so the default is to not convert
these times (except for Canon CR3 files, which always use UTC times).  This
option also disables the auto-detection of incorrect time-zero offsets in
QuickTime date/time values, and enforces a time zero of 1904 as per the
QuickTime specification.

=item RequestAll