SpreadsheetUI : Add clarifying comment
SpreadsheetUI : Add clarifying comment

GafferHQ/gaffer,ImageEngine/gaffer,andrewkaufman/gaffer,johnhaddon/gaffer,GafferHQ/gaffer,johnhaddon/gaffer,hradec/gaffer,ImageEngine/gaffer,ImageEngine/gaffer,hradec/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,hradec/gaffer,johnhaddon/gaffer,ImageEngine/gaffer,andrewkaufman/gaffer,johnhaddon/gaffer,hradec/gaffer,johnhaddon/gaffer,GafferHQ/gaffer,andrewkaufman/gaffer,hradec/gaffer