## Presentation of data

Various ways of data representation are possible,
selected by the following letters or letter combinations:
** H** histogram
**HH** histogram, full
** I** histogram with vertical lines
**II** histogram with small hatching
** E** histogram with statistical error bars
** A** histogram, vertically hatched
** C** histogram, horizontally hatched
**AC** combination of **A** and **C**
** J** histogram, hatched (45 degr.)
** K** histogram, hatched (135 degr.)
**JK** combination of **J** and **K**
Note also the Histogram conventions
For hatched histograms the hatching density is defined by the display parameter HATCHING.
** U** open columns,
**UU** solid columns,
** V** columns with vertical lines,
** W** hatched columns.
The column width is defined by the display parameter COLUMN.
For hatched columns the hatching density is defined by the display parameter HATCHING.
** O** fine hatched polygon,
** OO** solid polygon,
** AO** vertically hatched polygon,
** CO** horizontally hatched polygon,
**ACO** combination of **AO** and **CO**,
** JO** 45 degree hatched polygon,
** KO** 135 degree hatched polygon,
**JKO** combination of **JO** and **KO**.
For hatched polygons the hatching density is defined by the display parameter HATCHING.

## Histogram conventions

Histograms are drawn with the following convention:
The content Y(i) of the channel X(i) is taken to be valid from the
channel-number limit X(i) to X(i+1). Thus the number X(i+1) defines
simultaneously the end of the bin (i) and the begin of bin (i+1).
This allows the handling of a variable bin size.
If you want to center the histogram bin around its nominal value,
please shift the data by a data modification in the header line:
**
H: X-0.5 Y,H0
**