[Chimera-users] -S option in ksdssp command

[kovzany at go.com]

Dear All,

I'm trying to get an output with protein secondary structure 
assignment into a text file, using ksdssp command, unfortunately 
everytime I get error like this:

Computing secondary structure assignments for model #0
using ksdssp (Kabsch and Sander Define Secondary Structure
of Proteins) with the parameters:
  energy cutoff <default>
  minimum helix length <default>
  minimum strand length <default>
-S option not yet available

My question is: am I doing something wrong, or -S option is not yet 
implemented, despite it is described in ksdssp.html help file?

thanks,

PK