This must be set on the character holding the leash, /not/ the character 
wearing the collar.  The ride must also be initiated by the leash holder.

@set me=/ride/leash/_handup:You offer a collar to %l.
@set me=/ride/leash/_ohandup:offers %l a collar.
@set me=/ride/leash/_oohandup:offers you a collar.  (hopon %n).
@set me=/ride/leash/_hopon:You put the collar around your neck.
@set me=/ride/leash/_ohopon:puts on the collar offered by %n.
@set me=/ride/leash/_oohopon:puts on the collar and starts following you.
@set me=/ride/leash/_lstatrider:is being led by %n's leash.
@set me=/ride/leash/_lstattaur:is leading %l by %p leash.
@set me=/ride/leash/_oldroom:leaves, taking %l along on a leash.
@set me=/ride/leash/_ridermsg:leads you along by the leash.
@set me=/ride/leash/_newroom:arrives, bringing %l along on a leash.
@set me=/ride/leash/_hopoff:You unclasp your collar from %n's leash.
@set me=/ride/leash/_ohopoff:unclasps %n's leash from the collar.
@set me=/ride/leash/_oohopoff:unclasps your leash from the collar.
@set me=/ride/leash/_dropoff:You release %l from your leash.
@set me=/ride/leash/_odropoff:releases %l from %p leash.
@set me=/ride/leash/_oodropoff:releases you from %p leash.
@set me=/ride/leash/_xhopon:You fail to clasp %n's leash to your collar.
@set me=/ride/leash/_oxhopon:fails to clasp %n's leash to the collar.
@set me=/ride/leash/_ooxhopon:fails to clasp your leash to the collar.
@set me=/ride/_mode:leash

This must be set on the character wearing the collar.  The ride must be 
initiated by the collar wearer.  

@set me=/ride/leashed/_handup:You offer a leash connected to your collar to %l.
@set me=/ride/leashed/_ohandup:offers %l a leash connected to %p collar.
@set me=/ride/leashed/_oohandup:offers you a leash connected to %p collar.  (hopon %n).
@set me=/ride/leashed/_hopon:You take the leash.
@set me=/ride/leashed/_ohopon:takes the leash offered by %n.
@set me=/ride/leashed/_oohopon:takes the leash and starts following you.
@set me=/ride/leashed/_lstatrider:is leading %n by a leash.
@set me=/ride/leashed/_lstattaur:is being led by %l's leash.
@set me=/ride/leashed/_oldroom:leaves, led by %l's leash.
@set me=/ride/leashed/_ridermsg:follows you along by the leash.
@set me=/ride/leashed/_newroom:arrives, led by %l's leash.
@set me=/ride/leashed/_hopoff:You drop the leash connected to %n's collar.
@set me=/ride/leashed/_ohopoff:drops the leash connected to %n's collar.
@set me=/ride/leashed/_oohopoff:drops the leash connected to your collar.
@set me=/ride/leashed/_dropoff:You pull the leash from %l's hand.
@set me=/ride/leashed/_odropoff:pulls the leash from %l's hand.
@set me=/ride/leashed/_oodropoff:pulls the leash from your hand.
@set me=/ride/leashed/_xhopon:You fail to take the leash connected to %n's collar.
@set me=/ride/leashed/_oxhopon:fails to take the leash connected to %n's collar.
@set me=/ride/leashed/_ooxhopon:fails to take the leash connected to your collar.
@set me=/ride/_mode:leashed