These are some "System" Files for Synapse .. here is a list : macros.txt - Sample Text Macros icd9.r - ICD9 Codes.
Have a read of the macros.txt ... So, I have a macro that says "shou:" and when I type that, I get the results of a normal shoulder examination expanded on saving. The icd9.r is used to generate the local icd9 lookup codes (AAFP 1000 most common codes )