An Ada test script identifiers is a text string used as a label, such as the name of a TEST or a STUB in a .ptu test script.
Identifiers are made of an unlimited sequence of the following characters:
a-z
A-Z
0-9
_ (underscore)
Spaces are not valid identifier characters.
Note that identifiers starting with a numeric character are allowed. The following statement, for example, is syntactically correct:
TEST 1
...
END TEST
Unlike keywords, Ada Test Script Language identifiers are case sensitive. This means that LABEL, label, and Label are three different identifiers.