Addendum to QRT Version 1.1 The following are changes and additions to QRT which were implemented after the manual was written. Additions and Enhancements Pattern Resizing Patterns can now be resized. If a pattern is defined with a size of 10 x 10, it can be made bigger or smaller on each object to which it is attached. This capability is not listed in the Language Reference Guide. Anywhere the keyword PATTERN appears within a primitive definition, two other parameters can be attached: xmult = p ymult = p where p is a positive floating point number. This is a scale factor; for example, '2' would make the pattern twice as big, and '.25' would reduce it by a factor of 4. The x and y sizing parameters need not be the same. Bugs in Version 1.1 Transparent Objects Object transparency does not work correctly in version 1.1. This bug is localized to a small section of code and will be fixed in a future version. QRT still accepts the TRANS parameter, but it should not be used. QRT Ray Tracer Page 1 Addendum to 1.1