Cross-platform software

Using Html/Javascript you can only select files using the file upload html component (I think Flash / Silverlight wrap this to make things easier but its still sandboxed)
You can however use Java Applets (orwhatever they are called these days), Native ActiveX controls or .Net Controls to provide additional functionality (this hase security implications and required VM/Runtimes Frameworks etc)
Adobe Air or other client side technology might work, but looks like you want to do this in JavaScript. In this case, uploading the file to the server and manipulating from there is the best bet.

Taggings:

I first installed cytoscape.js via npm. In the typescript-file (for Angular) I imported it by “import * as Cytoscape from 'cytoscape';”. And finally to use a Cytoscape instance I could store it in a variable by initializing it via “this.cy = Cytoscape({container: document.getElementById('cy'), … });”.

Mapping taxonomy terms from Drupal 5 to Drupal 7

In Drupal 7 tagging terms are stored as fields of the entity. In previous Drupal versions tags are assigned to nodes stored in a table taxonomy_index(nid, tid, created). In D7 we have some table as for example field_data_field_taggings were each term refrerence is stored as a row. If more then one term is assigned to a content node (e.g. in the answers module), the value in the column delta incremented to have a unique key. To generate this table we need an sql statement that increments this delta if more than one term exist for the node.
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