Rule ''10.01 Markers''
- The first 3 shots must be semi-auto mode only.
- Markers will be limited to a ROF of 10 balls per second (in 2009 actually 10.5 bps), defined as no two consecutive shots may be timed shorter than 95ms apart (reading on ROF meter of 10.5 bps or less = legal; reading on ROF meter of 10.6 bps or higher = illegal).
- Ramping of shots will be allowed only once 5 bps has been achieved. Then the marker may ramp to 10 bps, but only as long as the 5 bps is continually maintained. Once the trigger is stopped to be activated, only one single additional shot may be discharged.
Clarification: the 5 bps for start/sustain ramping dose not need to be hit physically, it refers to the time delay between trigger activations, which must be at least the equivalent to 5 bps. So a marker may start to ramp up to 10 bps, if (after the first three shots being in semi-auto only) the time delay between 3rd and 4th trigger activation is less than 200ms.