For example: "example.txt 1:ascii:1" assuming a default version delimiter of "-".
For example: "example.txt:1:ascii:1".
The first form can be ambiguous. For example, the specification "a file 1:ascii:1" could mean a name of "a file" with version "1", or a name of "a" and a version of "file-1". Rational® Synergy takes the rightmost version delimiter as the separator between the name and the version. In this example, it is always taken as a name of "a-file" with version "1".
The second form can accept names containing the version delimiter without any ambiguous interpretation. The advantage of using this form is that it always has a unique meaning.