setopt AUTO_CD              # Auto cd to a directory without typing cd.
setopt AUTO_PUSHD           # Push the old directory onto the stack on cd.
setopt PUSHD_IGNORE_DUPS    # Don't store duplicates in the stack.
setopt PUSHD_SILENT         # Do not print the directory stack after pushd or popd.
setopt PUSHD_TO_HOME        # Push to home directory when no argument is given.
setopt CDABLE_VARS          # Change directory to a path stored in a variable.
setopt AUTO_NAME_DIRS       # Auto add variable-stored paths to ~ list.
setopt MULTIOS              # Write to multiple descriptors.
setopt EXTENDED_GLOB        # Use extended globbing syntax.
unsetopt CLOBBER            # Don't overwrite existing files with > and >>.
                            # Use >! and >>! to bypass.

alias 1='cd -'
alias 2='cd +2'
alias 3='cd +3'
alias 4='cd +4'
alias 5='cd +5'
alias 6='cd +6'
alias 7='cd +7'
alias 8='cd +8'
alias 9='cd +9'