-c ENUM_USERS[ <max balance>]\n
-s 201 Users <count> <username>:<balance>:<flags> <username>:<balance>:<flags> ...\n
+ <max balance> and <min balance> can be '-' to indicate "none"
+c ENUM_USERS[ <min balance> [<max balance>]]\n
+s 201 Users <count>\n
+s 202 User <username> <balance> <flags>\n
+ ...
+s 200 List End\n