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TTworkbench: Does TTCN-3 support unicode?

Environment/Versions
TTworkbench, Windows, Linux, 32/64bit
Answer
Unicode is allowed as value for universal charsting types only. The default encoding for universal charstrings in TTCN-3 UCS-4 (UTF-32). 

For all other values, TTCN-3 keywords and identifier like variable or template names only alphanumeric signs (0-9, a-z, A-Z) and underscores are allowed.
 

Product : TTCN-3 Language