prblocks Object from a Plot-Ready or Plotted TableExtract the prBlocks object from a plot-ready or plotted table.
This is an internal function, not intended to be called by package users.
blocks(x, enabledOnly=TRUE)A prBlocks object, containing blocks for a table, or NULL if none
have been defined.
A plot-ready (prTable) or plotted (pltdTable) table object.
Logical. If TRUE, only the subset of table blocks that are enabled is extracted.