# Atom Connectivity

Changing the way atoms are connected to each other

n [r] atoms

Sets the maximum number of bonds for the specified atoms to n and changes the default bond radius for the given atom type to r.

## mode name

[-p] [-s] [-t] [-a=0]

Puts the program into the naming mode.

• -p: label prefix
• -s: label suffix
• -t: element symbol
• -a: autocomplete, turned off by default. Value 1 switches the autocompleting on, with value 2 stopping the procedure when an atom of a different type is encountered on the way. Value 4 - when an atom with a different part is encountered on the way and value 6 is selected when combining the cases of 2 and 4. A special value, 8, does automatic naming.

## FixHL

Updates H-atom labels according to the labels of the bearing atoms

## mode grow

[-s] [-v] [-b] [-shells]

Displays the directions in which the molecule can be grown.

• -s: also shows the short interaction directions.
• -v: [2.0 Å] shows directions to the molecules within the v value of the Van der Waals radii of the selected atoms, which can be generated by clicking on the direction representations. Only unique symmetry operations (producing shortest contacts) are displayed. If an atom is selected before entering this mode, the environment of only this atom(s) can be grown.
• -r: shows “growing bonds” to symmetry equivalent atoms of the selected one(s) within 15 Å. Shortcut CTRL+G is used to enter the ‘mode grow’
• -shells: only applicable in >>mode grow -shells - allows growing atom by atom. If a ‘grow’ bond is clicked, only the immediate attached to that bond atom is grow, if the atom with outgoing ‘grow’ bonds is clicked - atoms for all bonds are grown