plot is a cover for pd.
For example:
load 'plot'
plot */~ i:20
This loads the plot system and draws a simple plot.
The optional left argument is a list of pd commands and options, delimited by semicolons.
The first command may be a plot type, e.g. the following are equivalent:
'bar' plot data
'type bar' plot data
The right argument is data.
plot and pd may be used together, for example:
'bar;itemcolor red,green' plot >:?2 6$10 NB. draw a barchart
pd 'print' NB. print it