2012

You can trim objects to their nearest intersection with other objects. Instead
of selecting cutting edges, you press Enter. Then, when you select the objects
to trim, the nearest displayed objects act as cutting edges. In this example,
the walls are trimmed so that they intersect smoothly.
NOTE You can extend objects without exiting the TRIM command. Press and
hold Shift while selecting the objects to be extended.
Extend Objects
Extending operates the same way as trimming. You can extend objects so they
end precisely at boundary edges defined by other objects. In this example,
you extend the lines precisely to a circle, which is the boundary edge.
Select and Modify Objects | 265