Dialog Options - Smart coding
Function: The dialog is used to configure the settings that make it easier to enter code.
Call: TwinCAT > PLC programming environment > Smart Coding

Declare unknown variables automatically (AutoDeclare)  | 
 For the AutoDeclare function to be available in the ST editor as well, the option Enable for the ST editor must also be enabled as of build 4026.  | 
Enable for the ST editor  | Prerequisite: The option Declare unknown variables automatically (AutoDeclare) is enabled. 
 
 (Available from Build 4026)  | 
Show all instance variables in input assistant  | 
 
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List components after typing a dot (.)  | 
 This means: If you enter a dot at a point where TwinCAT expects an identifier, a selection list with input options appears.  | 
List components immediately when typing  | Requirement: Option List components after typing a dot (.) is enabled. 
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Insert with namespace  | 
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Convert keywords to uppercase automatically (AutoFormat)  | 
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Automatically list selection in cross reference view  | 
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Underline errors in the editor  | 
 (Available from Build 4026)  | 
Highlight symbols  | 
 (Available from Build 4026)  | 
See also:
- PLC documentation: Programming languages and their editors
 - PLC documentation: Using the input assistant
 - PLC documentation: Find locations where the cross reference list is used
 
: The Auto Declare dialog opens as soon as you have entered an undeclared identifier in a programming language editor and exited the input line.
: The AutoDeclare function is not available in the ST editor.