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It is not possible to use a '' sign in a variable name (map name). 'map-name' will be read as: calculate variable 'map' minus variable 'name'. Uses underscore ('_') in stead of ''. The same accounts for other mathematic signs like:
'*' or 'x' which mean multiply
'^' which indicates square
'exp' indicates exponent
Click here for a full list of operators that should not be used in input names.
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HABITAT uses a point '.' as a deliminator.