Offset to Current Layer

Here is a great tip for creating for wall lines from grid lines:

1. Draw grid lines on GRID layer
2. Set the WALL layer current.
3. Offset your wall line from the grids using the Offset to Current Layer option (this will create lines on the WALL layer).

So how do you set this magical offset option?

At the command line type OFFSET and then L (for Layer) and C (for Current) and then continue with your offset distance...

Same principle works for creating T-bar ceiling lines from wall lines, have fun!