Allow configuration elements to be flexibly associated with cells according to:

• Grid locations, e.g.:
  • Entire grid
  • Corner, column header, row header, body
  • Specific cell(s), column(s), row(s)
• Data values, e.g.:
  • Cells containing price values
  • Columns containing Date values
  • Rows containing non-zero error codes
• Display modes, e.g.:
  • Normal
  • Select
  • Edit