A Tag Name can include the alphanumeric characters:
A - Z
a - z
0 - 9
- (dash)
and _ underscore.
For example, U2_FIC-109a is a legal tagname.
Note -Underscore should NOT be used in a Project Name. WebAccess uses the Underscore as a delimiter in files requiring identification of both Project Name and SCADA Node (for example, Project1_Node1.