Labels for the basis functions

You see the labels for the basis functions in for instance the DOS section of the output. The labels are also used in combination with options like Print Eigens and Print OrbPop. (See also Print Orbitallabels).

What do the labels look like? A normal atomic basis function, i.e. a numerical orbital or a Slater type orbital, gets a label like
<atom number>/<element>/<orbital type>/<quantum numbers description>/<exp in sto>
Example with a Li and a H atom:

           1/LI/NO/1s
           1/LI/NO/2s
           1/LI/STO/2s/1.4
           1/LI/STO/2p_y/1.3
           1/LI/STO/2p_z/1.3
           1/LI/STO/2p_x/1.3
           2/H/NO/1s
           2/H/STO/1s/1.9
           ...

Core states will just get simple numbers as labels:

           CORE STATE 1
           CORE STATE 2

With the fragment option you can give meaningful names to the fragment option, see Fragment%Labels and DosBas.