On Sep 21, 2009, at 7:27 AM, Victor Muñoz wrote:

I'd like to know if there's a way to select the select mode "append" using the
command line instead of the visual interface.

Hi Victor,
There isn't a way to do that, but it typically isn't necessary.  The "|" and "&" characters perform union and intersection operations respectively.  So for example you can add all LYS residues to the current selection with:

sel sel | : LYS

or you could intersect the current selection with LYS residues with:

sel sel & :LYS

If you really need to change the mode for some reason, let me know what that reason is and maybe we can add something.

--Eric
                        Eric Pettersen
                        UCSF Computer Graphics Lab
                        http://www.cgl.ucsf.edu

P.S. The "|" character is a vertical bar, not a capital i, in case that's not clear in the font you're using.