Unlike the full BUG, BUG Lite can be used as an isolated pattern.
Here is an example BUG Lite:
The candidates marked in red form a deadly pattern, so one of the two green candidates must be true. Furthermore, since digit 6 is locked in the intersection of column 1 and box 7, we can eliminate digit 9 from those cells.
- BUG Lite thread on the Sudoku Players' forum