Resets table parameters for merged columns in a table.
USAGE:
rtfSpanRow(colSpan, cellx, cellwidth)
ARGUMENTS:
colSpan
numeric vector that determines how many columns there are and how many columns
they span of the regular table; For example, c(2,3) would imply 5 columns in the
table with the current row merging the first two cells together and the last three cells together.
cellx
cumulative sum of cell widths
cellwidths
cell width values in twips
VALUE:
A list with new numCols and cellx and cellwidth calculated based on the merged cells.