pomru

There is an expression cookbook in the Houdini documents that contains some tips and tricks for writing expressions: http://www.sidefx.com/docs/houdini/ref/expression_cookbook.html [www.sidefx.com] You can also use help (F1) and search for ‘expression cookbook’

There was a forum topic on this subject from a week ago in case you did not see it: https://sidefx.com/forum/topic/52507/ [sidefx.com]

In that thread, this alternate link for Houdini 16.5 windows was given: ftp://ftp.sidefx.com/indie/houdini-16.5.268-win64-vc14.exe

Hope that helps!

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Fractal Ornaments http://www.entagma.com/fractal-ornaments/ [www.entagma.com]
Mandelbrot and Mandelbulb http://www.entagma.com/mandelbrot-and-mandelbulb/ [www.entagma.com]