Example for the Sequence Editor

SEQ:SEQUENCE,L=79.00;
   B1:  B, AT=19.115;
   SF1: SF,AT=37.42;
   QF1: QF,AT=38.70;
   B2:  B, AT=58.255;
   SD1: SD,AT=76.74;
   QD1: QD,AT=78.20;
END;

B2W:B2,ANGLE=0.1*B2->ANGLE;

EDIT,SEQUENCE=SEQ;
   MOVE,ELEMENT=SF1,TO=-1.27,FROM=QF1;
   MOVE,ELEMENT=SD1,BY=0.01;
   REPLACE,ELEMENT=B2,BY=BS2;
END,NAME=NEWSEQ;

This example moves the two sextupoles and replaces the element B2 by the element B2W. The effect of the above REPLACE command is equivalent to

INSTALL,ELEMENT=B2W,AT=0,FROM=B2;
REMOVE,CLASS=B2;

In this example a new element B2W is installed at the position of B2 and the the latter is removed. This works, since all positions are evaluated to constants immediately.