The internal commands support only three options, because this is easier to remember. These options start with a dash (-) . 1. -C or -CLEAR , used by AVAIL , ENDCLI , LOCATE , PATH , RESIDENT , RUN , CTRL 2. -R or -RECURSIVE , used by COPY , DELETE , DIR , LIST , RECOPY 3. -Q or -QUICK , used by DIR , LIST So instead of typing "dir -q" you can also type "dir -quick". As nearly everything, options are also case independent.