9e0dc6c5_BAMBE_manual_Run_control_file_options__Description
[Option] initial-theta [Choices] Comma separated list of positive theta values. Default is 1.0 [Description] 
The weighted average of these values should be 1, with weights given by the proportion of sites in each site category. (Renormalization is automatic and a warning given if the condition fails.) If there are an equal number of sites in each category, for example, the numbers should average to 1.
BAMBE manual
Description