The size command sets the following:
Style is controlled with the style command and/or Molecule Display icons.
Bonds and pseudobonds can be specified by their endpoint atoms or directly by selection and using the word sel. Pseudobonds can also be specified by pseudobond model number or built-in classifications: pbonds, hbonds.
The sizes of markers and links can also be adjusted with the mouse. See also: cartoon style, set subdivision, hbonds, crosslinks, setattr