In article <3924C309.975A48DA@gci.net>, "Mr. Art" <mr.### [at] gcinet> 
wrote:

> Are the keywords image_width and image_height functions
> or variables? I had assumed that the values were set 
> during the parse processes and made to be variables.

They are neither...they are constants, like "pi". In other words, 
read-only.

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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