Revision history [back]

hello you can look at the type of messages from here

http://www.ros.org/wiki/msg

in order to look what is inside of a specific message header file, you can check its reference

for example here is the laserscan msg

http://www.ros.org/doc/api/sensor_msgs/html/msg/LaserScan.html

if you want to create your own services and messages, check out this wiki below

http://www.ros.org/wiki/ROS/Tutorials/CreatingMsgAndSrv

hope these help you