...
The signature of the execution string depends on the command that is launched. But the general rule is that input/output data and attributes have prefic $. For example prefix $. You can set parameterized description for new element (description that appears not in property editor but on element itself). In parameterized description you also can use parameters substitution with prefix $. If the paths in the execution string contain spaces, they must be enclosed with quotes.
For example? let there be some perl script “myScript.pl” that accepts an input file as the first attribute and accepts the second attribute denoted as “param1”. The command may look as follows:
...