8.25.2 Greatest hits from previous weeks

8.25.2.1 Code that generates a mandala
8.25.2.2 Using Export[] sends the file where?
8.25.2.3 Skip header lines on import
8.25.2.4 How to make the digits of  go around in a spiral like this?
8.25.2.5 Is there an open source implementation of Mathematica-the-language?
8.25.2.6 How to manipulate 2D plots?
8.25.2.7 How do I clear all user defined symbols?
8.25.2.1 Code that generates a mandala

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=136974

My little brother asked me to print original mandalas for coloring. I would like some idea on how to create them, but without color, so he can color them. 
 
examples 
[graphics] [programming] [generative-art]
 
asked by zeros https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26849 Score of 79
answered by Anton Antonov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34008 Score of 101
8.25.2.2 Using Export[] sends the file where?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=8586

I am trying to use the  Export  command to convert a list of plots into a *.gif file, and the command runs and executes well, but I can't find the file! Where is it ... 
[export]
 
asked by Patrick Da Silva https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1785 Score of 41
answered by Vitaliy Kaurov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13 Score of 56
8.25.2.3 Skip header lines on import

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=50718

When importing a data file what are the comment symbols for Mathematica? 
That is, given a file like this 
 
 blabla 
bulbul 
 
1 2 6 54 7 ... 
.. 
 
 
what symbol do I have ... 
[import] [text]
 
asked by MaxJ https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14687 Score of 21
answered by george2079 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2079 Score of 18
8.25.2.4 How to make the digits of  go around in a spiral like this?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=109982

Here is a start. 
 
 MapIndexed[Text[Reverse[First[RealDigits[Pi,10,252]]][[Tr@#2]],#]&, 
Table[{t Cos[t],t Sin[t]},{t,0,16Pi,0.2}]]//Graphics 
 
[graphics] [formatting] [generative-art]
 
asked by matrix89 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5379 Score of 57
answered by Martin Ender https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2305 Score of 73
8.25.2.5 Is there an open source implementation of Mathematica-the-language?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=4454

I've seen questions before such as "What is the best open-source equivalent for Mathematica?", but that specific question (and that line of inquiry in general) cares more about the computer algebra ... 
[programming] [open-source]
 
asked by sblom https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=178 Score of 127
answered by Simon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34 Score of 91
8.25.2.6 How to manipulate 2D plots?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=7142

When it comes to visual analysis, large datasets or data with intricate internal details often makes plotting in 2D useless, as the outcome is either just a fraction of the full dataset, or no details ... 
[plotting] [graphics] [dynamic] [gui-construction]
 
asked by István Zachar https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=89 Score of 141
answered by István Zachar https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=89 Score of 160
8.25.2.7 How do I clear all user defined symbols?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=850

Is there some way to do this other than going to  Evaluation -> Quit kernel  and firing a new one up? 
[variable-definitions] [symbols] [faq] [clear] [persistence]
 
asked by niklasfi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=82 Score of 104
answered by Artes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=184 Score of 105