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Version K 27.5.2011
Updated manual to include Valon TT
Version L 23.11.2011
Updated manual to include Valon TT CSO
Version M 19.3.2012
Separate manual for Valon TT and Valon STA
New feature: Fixation light
Update GUI images and text to reect new features
Version N 2.8.2012
Removed all references to LIO
Version O 12.12.2012
Changed description for arc-pattern.
User Manual Revision his-
tory