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1:28 AM
@StéphaneGimenez @Gilles Another interpretation of the meaning, and hence potential edit (one I might have taken back when I was proofreading and my credo was to introduce as little formal change as possible!):
"How does varying the numbers in this expression alter the meaning?"
 
 
17 hours later…
6:02 PM
@jcm69 re this comment -- your English needs no apology :) For the term you highlighted, "tracks to follow" (presumably translating pistes ?) is totally comprehensible but might be better as "leads to follow" or "paths to go down".
 

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