star * * * ....

[RHS Linux User]

I have problems in understanding the "*" signs in swarm programs, are 
those related with Smalltalk, or something else. I only know in 
C, * will be used to indicate a variable is a pointer, but what about
these:

(from HeatBugs application)
HeatbugModelSwarm * heatbugModelSwarm
Xcolormap * colormap
main(int argc, char ** argv)
-drawSelfOn: (Raster *) r;

Would anyone please explain the * and ** here, and if possible point me
a reference about the SWARM usage conventions?

Many Thanks!

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