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When using Mathematica how can I get a list of the allowed values of an option? As an example I can use the Options command as follows -


which gives me a list of available options

(* {Alignment->Automatic,AppearanceElements->Automatic,AutoAction->\
TrackedSymbols->Full,UnsavedVariables:>None,UntrackedVariables:>None} \

I can use Options for a specific parameter, i.e.,

(* {ControlType->Automatic} *)

But this doesn't tell me what the possible allowed values are for this option. Checkbox, Setter etc. Is there a command I can use to find the allowed values of an option?

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I think this was already asked here stackoverflow.com/questions/8718912/… –  belisarius Feb 13 '13 at 12:33
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1 Answer

Unfortunately, there is no command which tells you that. There are several reasons for that. First, the possible option values are context dependent. This means, e.g. the option Method can be set to different values depending on whether you use it in NDSolve, FindRoot, etc..

Second, as you see with "Elements" or "ImageList" options of Export, options are not always symbols, but usage messages cannot be applied to strings and documentation to string options rarely exists as separate page.

Therefore, the only way you find out about possible option values is the documentation. Note, that you often have two places to look

  1. You want to know what the special option ControlType of Manipulate does, then you first check out the help page of Manipulate
  2. For general information about the option, if it is a symbol, you check out the help page of the symbol itself.
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Thanks, found the info i needed in the documentation but just wasn't sure if there was a command i could use to get the info i needed, would be good if such a command existed but i can see how this is context dependent. Thanks for answer. –  David McHarg Feb 13 '13 at 12:30
and it's not always in the docs, either... –  acl Feb 13 '13 at 23:56
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