Specifies where to look for the current "throughput" information for this NODE. You can also specify multiple targets, which will then be added together to make the aggregate result which is then displayed. Specify the targets on one TARGET line, seperated with a space. If a targetspec starts with a '-', then it's value will be subtracted from the final result instead.

Also, if a targetspec starts with a number, then a *, then it's used a scaling factor on the result. You can do basic maths with this, especially if you remember that multiplying by a number below 1 is the same as dividing by 1 divided by that number (0.5* is the same as divide by 2).

For both the '-' and '*' options, there must be no spaces between any modifiers and the actual target string after it.

It's important to note, especially for NODEs, that the value that is used does not have to be bandwidth. You can use data for temperature, session-counts, CPU usage or anything else you can get data for.

The actual contents of the targetspec depend on the data source plugins that are available. The standard plugins are documented here.

To help with filenames that can contain spaces, or for the external script data source, you can enclose the entire targetspec in double-quotes (") to show that it is a single targetspec. The quotes must be around the whole targetspec, including any prefixes.