[cs631apue] Overrides an option

[mseaton]

Hello,
Does anyone understand the meaning of an option that overrides another? 
For example, the -h option overrides the -k option.

I also want to make sure that I am interpreting this correctly:

"If more than one operand is given, non-directory operands are displayed 
first;" Does this mean that any of the options listed in the man page 
must appear before a directory name?

"directory and non-directory operands are sorted separately and in 
lexicographical order." Not sure of the meaning of this statement.

Thanks.
Marlon