To start a run in an autorun sequence, the command START should be used:

Syntax:

START S[CALER]    <number of scaler>|<label> <limit>

or

START H[ISTOGRAM] <number of histogram>|<label> <limit>

Examples:

Starting a run to accumulate 10'000'000 events in the histogram 1:
```
START Histogram 1 10000000
```
Starting a run to accumulate 5'000'000 events in the histogram "Forw":
```
START Histogram Forw 5000000
```
Starting a run to accumulate 3'000'000 events in the scaler 5:
```
START Scaler 5 3000000
```
As a rule, if a run was already active when an autorun sequence is started, it will be stopped. The users can nevertheless keep the running run and incoporate it in the autorun sequence by using the command STOP as the first command in the autorun sequence: :

Syntax:
```
STOP S[CALER]    <number of scaler>|<label> <limit>
```
or
```
STOP H[ISTOGRAM] <number of histogram>|<label> <limit>
```
Example:
Stopping a run, already running before the autorun sequence is started, after an accumulation of 10'000'000 events in the histogram 1:
```
STOP Histogram 1 10000000
```