EXM-29862: Rectangular cell selection.
EXM-31055: After deleting the content of selected cells, the selection is kept to allow you to delete the table structure.
EXM-30444: Corrected profiling.
Small addition for clarity.
EXM-30651: Changed wording for more clarity.
Merge branch 'dev'

* dev:
  Spell checking
  miscellaneous punctuation edits
  fixing profiled XREfs
  Fixing profiled xrefs
  Removed DOCTYPE declaration from targetset example documents for avoiding Xerces validation error.