In the documentation, the width of the device panel of the robot compontent is too small and the joint limits values are not completely visible.
An horizontal scrollbar is added but this looks bad.
Instead the width should be big enough to display everything and no scrollbar should be visible.

Example:
https://www.cyberbotics.com/doc/guide/bioloid?version=released

![Screenshot from 2021-0

It would be useful to make user camera parameters such as clip distances and FOV configurable from SDF, from within the <plugin filename="GzScene3D... tag. At the moment, it's possible to change those programmatically from any GUI plugin, but that isn't very convenient.

The motivation for this is that noticed that the default field of view of the user camera is different on Ignition

The <polyline> element should be supported as a geometry when loading elements via the C++ API.

I don't remember why that message was not ported to ROS 2. The message is on common_interfaces.

We should remember to do all these:

• Bridge the message
• Update [air_pressure.launch.py](https://github.com/ignitionrobotics/ros_ign/blob/dashing/ros_ign_gazebo_demos/launch/air_pressure.launch.py

The tutorial to install Gazebo from source for Gazebo >= 9 in https://github.com/osrf/gazebo_tutorials/blob/master/install_from_source/tutorial_default.md#dart-support reports some Trusty-specific steps (adding ``ppa:libccd-debsandppa:fcl-debs`) that however do not make sense as Gazebo >= 9 does not support Trusty.

This steps may be confusing for users that try to install this PPA in non-T

Some links to lines of code in a tutorial are out of date (see https://github.com/ignitionrobotics/ign-physics/pull/191/files#r557676961). They are pointing to branches rather than specific commits, and the line numbers are no longer accurate.

Also, there is a reference to master in that same paragraph that should be updated to main.