Google Charts DataTable — the tabular data model backing every chart.
Optional
The column's id, when the table was given one.
One of the column's custom properties -- the p map a column is given, Google's own slot for "custom values applied to the column", and where a co-located maidr declaration rides: p: { maidr: { ... } }.
p
maidr
p: { maidr: { ... } }
Google Charts DataTable — the tabular data model backing every chart.