Shortcut Key: B
Merges connecting lines, arcs, and curves into a single line entity.
Select the entities you wish to combine into a single line. All selected entities must share endpoints to form a continuous line. That is, each line entity has to be connected to the next line. This command affects currently selected entities.
This command is similar to Make Plane (see “Make Plane” on page 212), but Make Plane converts the selected lines into a plane (surface) instead of a line entity.
NOTE: Since this command converts arcs into lines, any arcs will lose their center points. Curves are also converted to vectors for this operation.