in Delphi IDE :: 
Introduced in Delphi 8, code folding is a feature of the Delphi IDE which lets you collapse (hide) and expand (show) your code to make it easier to navigate and read. By default, when you close and reopen your project the code that you collapsed would appear expanded - your code folding preferences are not saved. Here's how to "fix" this.
Introduced in Delphi 8, code folding is a feature of the Delphi IDE which lets you collapse (hide) and expand (show) your code to make it easier to navigate and read. By default, when you close and reopen your project the code that you collapsed would appear expanded - your code folding preferences are not saved. Here's how to "fix" this.
Read the full article to learn how to Preserve Code Folding When Reopening a Delphi Project
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You typo’d in your 4th paragraph. “{%ENDREGION}” –> “{$ENDREGION}”
@Dagan: thanks for noticing. Fixed.