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In 10.2 there is WolframLanguageData. As a sample, to get a list (sorted by common-ness) of symbols which do not begin with $, are not *Box or *Data functions, are not solely options to other functions, and having got rid of some of the display-only things like AngleBracket: dat = WolframLanguageData[ All, {"CanonicalName", "Frequencies", ... 1 No spacebar ... CreateDialog[ {a = Polygon[{{1, 0}, {0, Sqrt[3]}, {-1, 0}}]; Dynamic[ First@{Graphics[a = Rotate[a, 2 Pi/100], PlotRange -> {{-2, 2}, {-1, 3}}], Pause[1/100];}], DefaultButton[]}, Modal -> True] 5 Simon's code CreateDialog[ {(a = RandomInteger[BernoulliDistribution[0.1], {200, 200}]; Dynamic[ Image[a = 1 - Unitize[(# - 3) (# - 12) (# - 13)] &@ ListConvolve[{{1, 1, 1}, {1, 10, 1}, {1, 1, 1}}, a, {2, 2}, 0]]]), DefaultButton[]}, Modal -> True] 4 There was a wrong bracket in F. Also do not use { as a normal bracket, and second you wrote Exp{[ which has to be either {Exp[ or (Exp[ . F[k1_, k2_, λ1_, λ2_, δ_, w1_, w2_] := (1 - Exp[-(w1/λ1)^k1]) (1 - Exp[-(w2/λ2)^k2]) (Exp[(1 - (1 - Exp[-(w1/λ1)^k1]))^(-δ) + (1 + (1 - Exp[-(w2/λ2)^k2]))^-δ]^(1/-δ)) 1 To use Put or PutAppend with a filename saved in a string in terminal, one can use it in input form rather then >> or >>>, that is: filename="newfile.txt" Put[expression,filename] or PutAppend[expression,filename] I found the answer in http://stackoverflow.com/questions/8853676 by Brett Champion. While this solves my problem, I would ... 4 I'd allow myself some guesswork here, that you're going after alternatives as a form of excercise in Mathematica programming. However, you've clearly stated, that the list is list={a, b, c, d, e, f, g, h, i, j, k, l} and the expected output is c + e + g Note, that in the question you've linked, ReplaceList and FoldList are utilized to generate lists of ... 0 In V10, there is now the function Subdivide, which specifies the number of intervals (which equals one less than the number of points) into which a range is to be divided. The OP's example sine plot may be done as follows: Table[Sin[x], {x, Subdivide[0.2, Pi^2, 100 - 1]}] // ListPlot 18 I know this has been answered already on this site, but I cannot seem to find it. Map and Apply do subtly different things. For example, Map[f, {a,b,c}] (* {f[a], f[b], f[c]} *) If you have a list that is more deeply nested, without using the third argument which is for level specification, you get Map[f, {{a,b}, {c}}] (* {f[{a,b}], f[{c}]} *) or, if ... 18 One way would be to redirect all messages issued by ToExpression to a string-stream. Here is an example of that approach, with minimal error-checking: Needs["Developer`"] interpret[str_String] := Module[{s = StreamToString[], r, m} , Block[{$Messages = {s}}, r = ToExpression[str, InputForm, HoldComplete]] ; m = StringFromStream[s] ; Close[s] ; ...