Software version: VOXL 2

What I am trying to do:
I want a document containing a detailed description of the topics/messages recorded by the px4 in the ulog file.
For e.g. What information is contained by the actuator_outputs, actuator_motors datasets.

What actually happens: (error messages, behavior)
I have the message description available in the .msg file; but it contains information about what should be the datatype of the message rather than what the data represents or which signal it is logging.

Logs / pictures: Below is the description of actuator_outputs dataset, as present in the actuator_outputs.msg file:

uint64 timestamp # time since system start (microseconds)
uint8 NUM_ACTUATOR_OUTPUTS = 16
uint8 NUM_ACTUATOR_OUTPUT_GROUPS = 4 # for sanity checking
uint32 noutputs # valid outputs
float32[16] output # output data, in natural output units