Consists of zero or more pieces combined.
branch :: = piece*
The following table shows valid branches R and their set of strings L(R).
| Valid branches R for all pieces S and branches T | Set of strings L(R) |
|---|---|
| S | All strings in L(S). |
| ST | All strings ST with S in L(S) and T in L(T). |
XML Schema Regular Expressions | XML Schema Regular Expressions Reference Chart | Data Type Facets | Piece