A function for checking, merging, and more with a variety of different style formats.
See also
Other hidden helper functions for htmlTable:
prAddCells(),
prAddEmptySpacerCell(),
prAddSemicolon2StrEnd(),
prEscapeHtml(),
prGetCgroupHeader(),
prGetRowlabelPos(),
prPrepInputMatrixDimensions(),
prPrepareAlign(),
prPrepareCgroup(),
prTblNo()