Use Trim/L,to,L, Trim/L,to,C, or Trim/L,to,A to trim a line to a line, circle, or arc boundary. Start/End selector specifies which endpoint.
Three line trim operators: Trim/L,to,L, Trim/L,to,C, and Trim/L,to,A. The Start/End selector specifies which endpoint of the line to trim.