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REM comments - Comments - VBA
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VBA - Comments - Rem comments
REM Comments 
Sub RemComments()
  Rem Comments start with "Rem" (VBA will change any alternate casing to "Rem")
  Rem is an abbreviation of Remark, and similar to DOS syntax
  Rem Is a legacy approach to adding comments, and apostrophes should be preferred

  Rem Comments CANNOT appear after a statement, use the apostrophe syntax instead
  Rem Unless they are preceded by the instruction separator token
  Debug.Print "Hello World": Rem prints a welcome message
  Debug.Print "Hello World" 'Prints a welcome message

  'Rem cannot be immediately followed by the following characters "!,@,#,$,%,&"
  'Whereas the apostrophe syntax can be followed by any printable character.

End Sub

Rem Comments can appear inside or outside a procedure

Remarks

Comment Blocks

If you need to comment or uncomment several lines at once, you can use the IDE's Edit Toolbar buttons:

Comment Block - Adds a single apostrophe to the start of all selected lines

Comment Block (opens new window)

Uncomment Block - Removes the first apostrophe from the start of all selected lines

Uncomment Block (opens new window)

Multi-line Comments Many other languages support multi-line block comments, but VBA only allows single-line comments.

 
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https://develop.horje.com/learn/1434/reference

 

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