How to determine, whether Sun WorkShop is installed on Solaris worksation?

How to determine, whether Sun WorkShop is installed on Solaris worksation?
And if It's installed, how to start one?

I would try to run the command workshop ; if it's installed it will start the environment.

It was found that:

-This code verifies the SUNWsprox and SUNWsprot packages of WorkShop Visual.

pkginfo -l | grep -i SUNWspro

-If these packages are there than It may try to run.

# visu

or

# small_visu