The Edit menu contains the following commands:
Erase: Erases all atoms.
Cut: Delete selected atoms.
Copy: Copy selected atoms to memory.
Paste: Paste atoms in memory to Mouse Location
Select All: Select all atoms currently in Molecule Window.
Epimer: Epimerize the first selected atom by interchanging the second and third selected attached atoms.
Enantiomer: Reflects the structure through a specified axis.
This command erases the current structure and resets the default conditions for modeling.
This command deletes the currently selected atoms.
This command copies the currently selected atoms into memory. Atoms may be selected with SELA (best for small groups of atoms), double clicking on a Molecule (see Molecule Menu form more information on molecules in Pcmodel), or using Select All.
This command copies the atoms in memory to the screen, adds the atoms to the list of current atoms and generates new bonds as required. The location of the pasted atoms is up and to the right of the last mouse click. The new atoms are assigned a new molecule number and can be moved as a group with the standard molecule commands (see Molecule menu for more information).
This command selects all the atoms currently in the Molecule window.
This option allows for inversion of the stereochemistry at a chiral center. Before selecting EPIMER, the central atom and the two attachments to be switched must have been selected with the SELA command. Once the three involved atoms have been SELECTed, the EPIMER option can be chosen and the position of the two attachments (and all atoms attached to them) will be exchanged. This option will not work if the two attachments are connected to each other in a chain.
This option allows for enatiomerization of the structure by reflecting through an axis selected by the user.