What Are Directory Permissions?

• From FreeBSD man page for chmod provides this information:

           0400    Allow read by owner.
           0200    Allow write by owner.
           0100    For files, allow execution by owner.
                   For directories, allow the owner to search in the directory.

           0040    Allow read by group members.
           0020    Allow write by group members.
           0010    For files, allow execution by group members.
                   For directories, allow group members to search in the directory.

           0004    Allow read by others.
           0002    Allow write by others.
           0001    For files, allow execution by others.
                   For directories allow others to search in the directory.