# Commands in package

**URL:** <https://discourse.julialang.org/t/commands-in-package/33426>\
**Category:** General Usage\
**Created:** [January 16, 2020, 12:07am UTC](https://discourse.julialang.org/t/commands-in-package/33426 "2020-01-16T00:07:18Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![amind3211](https://avatars.discourse-cdn.com/v4/letter/a/77aa72/32.png) [@amind3211](https://discourse.julialang.org/u/amind3211)\
**Post date:** [January 16, 2020, 12:07am UTC](https://discourse.julialang.org/t/commands-in-package/33426/1 "2020-01-16T00:07:18Z")

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1.how can i find or show the items , command or everything you call it in a package ? like SpeedOfLightInVacuum in [PhysicalConstants.jl](https://github.com/JuliaPhysics/PhysicalConstants.jl)  
(by the way what do you call them ?)

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**Author:** ![Tamas\_Papp](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tamas_papp/32/25949_2.png) [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Post date:** [January 16, 2020, 9:05am UTC](https://discourse.julialang.org/t/commands-in-package/33426/2 "2020-01-16T09:05:15Z")

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I am not sure I understand the question, but you may be looking for `names`. See its docstring for various options.

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**Author:** ![nilshg](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nilshg/32/2283_2.png) [@nilshg](https://discourse.julialang.org/u/nilshg)\
**Post date:** [January 17, 2020, 2:34pm UTC](https://discourse.julialang.org/t/commands-in-package/33426/3 "2020-01-17T14:34:50Z")

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I don’t understand the question either but one other option to achieve something that might be close to something that someone might conclude from your question you might want to do is:

```julia
julia> using PhysicalConstants

julia> PhysicalConstants.</TAB></TAB>
@constant @derived_constant CODATA2014 CODATA2018 PhysicalConstant _constant_begin _constant_end _constant_preamble _name eval include

```

to be clear, just typing `PhysicalConstants.` (notice the dot) and then pressing tab twice gives the displayed result.