added details for memory function (.mem.objsize)

code/common/apidetails.q

@@ -107,3 +107,6 @@ add[`.email.disconnect;1b;"disconnect from email server";"[]";"0"]
 
 // tplog
 add[`.tplog.check;1b;"Checks if tickerplant log can be replayed.  If it can or can replay the first X messages, then returns the log handle, else it will read log as byte stream and create a good log and then return the good log handle ";"[logfile (symbol), handle to the log file to check; lastmsgtoreplay (long), the index of the last message to be replayed from log ]";"handle to log file, will be either the input log handle or handle to repaired log, depends on whether the log was corrupt"]
+
+// memory usage
+add[`.mem.objsize;1b;"Returns the calculated memory size in bytes used by an object.  It may take a little bit of time for objects with lots of nested structures (e.g. lots of nested columns)";"[q object]";"size of the object in bytes"]