I do my modeling in Rhino and do my render in Bryce..  If I want a detail on my models like letters and numbers I can go about it in two ways... 

one way I do it is, if my numbers are not to be too precise and the area on the model is not too difficult then I can make in a quick texture in my image editor with letters and or numbers.. I them bring them in Bryce and apply the texture to my object.. and struggle till with the transformation tools in the materials lab until I get my letters / numbers straight and on target...

However..  this is not the case most of the time... 

Second way... If I want to put precise details on specific locations on my models, I need to uvmap the model..  I use UVMapper Pro.  and make templates.  these templates I can bring them into my image editor and I apply my details.  This process allows me to put them In any area where I want them to appear on my model...  I then use these templates as the textures I use on my model in Brice..

If you do models with Bryce materials it won't be that easy for detailing...  It can be done but not without some processes...

hope it brought some clarity...

Tom

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