The Operator icons indicate that an operator was used. The operator icons are:

Equal to icon Equal to

Not equal to icon Not Equal To

Greater than icon Greater Than

Less than icon Less Than

Greater than or equal icon Greater than or equal to

Less than or equal to icon Less than or equal to

Add icon Add

Subtract icon Subtract

Multiply icon Multiply

Divide icon Divide

And icon And

Or icon Or

Cast icon Cast