Carsten Klee

To achieve this maybe http://httplug.io/ would be a good choice. As I understand the the [docs](http://docs.httplug.io/en/latest/) an own client implementation is no longer necessary. Meaning a separate class `CurlLoad` like...

I'm on holiday for two weeks now. After this I will look into it, if you have no other schedule. I'm just wonder why they say file_get_content is not important...

another: "dereference"

Let me know, if I can help.

I see. The problem lies within the usage of the indicators. With MARCspec you cannot reference indicator content. Thus you cannot state, that a field is only referenced when another...

https://github.com/MARCspec/MARCspec/issues/24#issuecomment-343456131 is a proposal for an extension of MARCspec towards references to indicator values. Thus what you are trying to express would look like 880[2]{^1=490[0]^1} Reference data of the second...

Well, it is like XPath for MARC. But like in XPath it is difficult to express dependencies. If you want a more expressive syntax like you suggested ``880->490$ind1``, you could...

Is there a reason why positions are always two digits (00 .. 09) other than the order of positions in a JSON file? To check validity of field entries, one...

@pkiraly will you update your [MARC21-in-Json example](http://pkiraly.github.io/2018/01/28/marc21-in-json/) in respect to the [Avram Schema](https://format.gbv.de/schema/avram)? Your example uses JSON arrays as values for positions, codes and types, while Avram uses JSON objects.

From field 001 until 007 you are using labels as values for the key 'tag'. E.g. ``` "007": { "tag": "PhysicalDescription", "label": "Physical Description", "repeatable": true, [...] ```