Macro for repeated/common table column definitions

Hi Folks,

I have a number of separate database tables which contain their own unique column definitions - however they do contain a small number of columns which share the same definition across all the tables - I was wondering if Liquibase supports any sort of re-usable column macro which allows you to define a number of re-usable columns in one place in a changelog and then easily add these columns to one or more tables without having to repeat the column definitions over and over again?