Is there a way to use a text editor to edit the various layers of an ArcGIS MapServer?
This is the service I'm working with.
Here's my scenario: I'm using ArcGIS Online to create a custom WebMap that will be viewed in ArcGIS Explorer for iOS. The MapServer layers already have symbol and label info included, but because the iOS device has a Retina display, the symbol widths and text sizes are unreadably small. My solution was to globally double these values, but I can't do so in ArcGIS Online without losing the existing symbology (things like highway shields that aren't editable in ArcGIS Online).
As a non-professional Mac user, I don't have any other ArcGIS applications at my disposal, but can I download the layers somehow, edit them in a text application, and re-upload to the WebMap from a file?