Initializing help system before first use

# ins~getset

Purpose
Create an ins~entityfetch record for fetching the content of a set entity into a Mosel variable.
Synopsis
`function getset(entity:text, dst:any):ins~entityfetch`
Arguments

entity | The name of the entity to fetch
dst | A reference to a set into which to store the entity content

Return value
A value that can be passed to ins~getscendata to read the entity into the given set.
Example

    declarations
      SCENARIO_ID='2926e9a1-9568-4116-84ed-2e75190bc651'
      months: set of integer
      users: set of string
    end-declarations
    ins~getscendata(SCENARIO_ID, [ ins~getset('months', months),
       ins~getset('users', users) ] )
    if ins~haserror then
      writeln_('Error: ',ins~getlasterror)
    else
      writeln('Months: ', months)
      writeln('Users: ', users)
    end-if

Example of fetching set entities into Mosel variables.
Further information
1. The destination must be a set of string, text, constant text, integer, real, boolean, or any.
2. If the entity type does not match the type of the set, the value will be converted (e.g. a integer type entity would be be converted to a string to be stored in a set of string).
3. Any content previously in the set will be removed during the call to ins~getscendata. If the set is indexing an array, this may result in a runtime error within the model.
4. This function cannot fail; invalid parameter values will only cause an error when the returned value is passed to ins~getscendata.
Related topics
ins~getscendata
Parent Topic Reading Scenario Data

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