Internal help for this application in Asterisk 1.4: 

  -= Info about application 'FollowMe' =- 

[Synopsis]
Find-Me/Follow-Me application

[Description]
  FollowMe(followmeid|options):
This application performs Find-Me/Follow-Me functionality for the caller
as defined in the profile matching the <followmeid> parameter in
followme.conf. If the specified <followmeid> profile doesn't exist in
followme.conf, execution will be returned to the dialplan and call
execution will continue at the next priority.

  Options:
    s    - Playback the incoming status message prior to starting the fo
llow-me step(s)
    a    - Record the caller's name so it can be announced to the callee
 on each step
    n    - Playback the unreachable status message if we've run out of s
teps to reach the
           or the callee has elected not to be reachable.
Returns -1 on hangup

diff output to internal help in Asterisk 1.2: 

-- not available in Version 1.2 --