Messages
Anonymous messages, letters, correspondence and publications where reliable comparison samples are available.
Documents
A manuscript in terms of its linguistic content, a typewritten or electronic document; handwriting and digital traces are separate objects.
Long texts
Articles, reviews, inquiries and other written materials.
Comparison samples
Texts of established origin comparable to the disputed text in the circumstances of their preparation.
Limitations
A short text, template, translation, collaborative editing or a lack of samples may make it impossible to resolve the question of authorship.