Apple Notes: add more info and clarify (obsidianmd#605)

* Apple Notes: clarify that only Mac is supported, and that password notes will have to be unlocked.

* add info on different scan formats

en/Import notes/Import from Apple Notes.md

@@ -1,9 +1,8 @@
 ---
 permalink: import/apple-notes
 ---
-Obsidian allows you to easily migrate your notes from Apple Notes using the [[Importer|Importer plugin]]. We recommend importing from Apple Notes on your macOS desktop rather than iOS.
+Obsidian allows you to easily migrate your notes from Apple Notes using the [[Importer|Importer plugin]]. Currently, it only supports importing from Apple Notes on your macOS desktop. 
 
-The Obsidian Importer plugin supports all Apple Notes content types including tables, images, drawings, scans, PDFs, and links introduced in iOS 17.
 
 ## Import Apple Notes data into Obsidian
 
@@ -19,11 +18,26 @@ You will need the official Obsidian [[Importer]] plugin, which you can [install
 8. Wait until import is complete. 
 9. You're done!
 
+## Supported content
+
+The Obsidian Importer plugin supports virtually all Apple Notes content types. This includes tables, images, drawings, scans, PDFs, and links introduced in iOS 17.
+
+> [!Warning]
+> Password-protected notes are encrypted by Apple, so must be unlocked before importing them. Any locked notes will be skipped.
+
+### Scans
+
+Apple stores scans in a variety of formats depending on how they were created. To preseve the original data, this means they'll be exported differently.
+
+* Scans created or viewed on older versions of macOS or iOS will be exported as a series of uncropped images.
+* Scans created or viewed on newer versions of macOS or iOS will usually be exported as cropped images.
+* Scans that have been edited using the features introduced in iOS 17 will usually be exported as PDFs.
+
 ## Alternate export methods
 
 Apple does not provide a native option to export your notes. However several third-party tools exist such as [Exporter](https://apps.apple.com/us/app/exporter/id1099120373) by Chintan Ghate. Please be aware that most tools are limited in what data they will export from Apple Notes and might not provide the most compatible output data. These tools work best if your Apple Notes are primarily text-only, and have few attachments or special features such as drawings and scans.
 
 Depending on the tool you used, the export may be in Markdown format or HTML format. Follow instructions based on the file format you exported to: 
 
 - [[Import HTML files]]
-- [[Import Markdown files]]
+- [[Import Markdown files]]