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Table of Contents

LabVIEW User Manual
LabVIEW Overview
LabVIEW New Features and Changes
Upgrading LabVIEW
Finding Your Way in LabVIEW
Examples, VI Templates, Project Templates, and Sample Projects
Installing LabVIEW
LabVIEW Concepts
LabVIEW How To
- LabVIEW How To
  - Setting up LabVIEW
  - Creating your project
  - Customizing LabVIEW
  - Customizing your Palette
  - Source Controls with LabVIEW
  - LabVIEW Classes
  - Block Diagrams
  - Searching Options in LabVIEW
  - LabVIEW Misc
  - VIs
    - Dragging and Dropping VIs, Pictures, and Text
    - Customizing Styles for your Current VI
    - Creating a Recursive VI
    - Searching in the VI Hierarchy
    - Viewing the Hierarchy of VIs
    - Polymorphic VIs
    - Building Malleable VIs
    - Debugging Malleable VIs
    - Saving VIs
    - Creating Password-Protected VIs
    - Locking and Unlocking VIs
    - Common Mass Compile Status Messages
    - LLBs
    - Mass Compiling VIs
    - Removing Block Diagrams from VIs
    - Removing Files from LLBs
    - Reverting to the Last Saved Version of a VI
    - Saving Changes to VIs That Ship with LabVIEW
    - Saving for a Previous Version
    - Saving Individual VI Files
    - Saving VIs in Existing LLBs
    - Customizing VIs
    - Changing a VI Window Title
    - Copying Browse Paths and Keywords
    - Preparing Example VIs to Appear in the NI Example Finder
    - Setting Execution Properties
    - Setting Window Appearance and Size
    - Running VIs
    - Launching a VI from the Command Line
    - LabVIEW-Defined Command-Line Arguments
    - Adding Comments to the Revision History
    - Resetting the VI Revision History and Revision Number
    - Viewing the VI Revision History
    - Debugging VIs
    - Memmory Usage
    - VI Strings
    - Comparing and Merging VIs
    - VI Metrics
    - Setting Undo
    - Configuring Shortcuts for the Quick Drop Dialog Box
    - Managing Unfinished Tasks
    - Creating VIs from Templates and Sample Projects
    - Creating Template VIs
    - Separating Compiled Code from VIs and Other File Types
    - Asynchronously Calling VIs
    - Asynchronously Calling a VI and Collecting the Results
    - Asynchronously Calling a VI without Collecting the Results
    - Asynchronously Calling Multiple Instances of a VI for Parallel Execution
    - Combining Option Flags into a Single Option Value
    - Configuring the VI Server
    - Configuring VI Calls
    - Controlling Front Panel Objects Programmatically from a SubVI
    - Creating a Strictly Typed VI Reference to Call VIs Dynamically
    - Creating a VI Server Application
    - Creating Control Reference SubVIs from Property Nodes and Invoke Nodes
    - Dynamically Calling a VI
    - Specifying Which VIs You Can Control Remotely
    - VI Scripting
    - Adding New Visible VIs Entries
    - Editing Existing Visible VIs Entries
    - Removing Visible VIs Entries
    - Calling Non-Modal Windows Programmatically
    - Importing a Web Service as a Library of VIs
  - Objects
  - Controls and Indicators
  - Arrays and Clusters
  - Matrices
  - Formula Nodes, Expression Nodes, and Script Nodes
  - Variables
  - Numeric Data
  - Comparing functions in LabVIEW
  - Showing and Hiding Labels and Digital Displays
  - Importing Background Images for Panes
  - Importing Graphics on Linux
  - Importing Graphics on macOS
  - Importing Graphics on Windows
  - Editing the Labels of Buttons
  - Graphs and Charts
  - Changing the Numeric Representation of a Waveform
  - Acquiring or Simulating a Signal
  - Analyzing a Signal
  - Displaying a Signal
  - Filtering a Signal
  - Merging Signals
  - Splitting Signals
  - Instrument Driver Modification Instructions
  - Creating Instrument Driver Projects
  - Creating Instrument Driver VIs
  - Displaying Pixels Not Visible in a 2D Picture Control
  - Resetting 2D Picture Controls
  - Using Sound Input and Sound Output Devices
  - Creating a 3D Scene with the 3D Picture Control
  - Configuring a Camera for a 3D Scene
  - Configuring a Light Source for a 3D Scene
  - Changing the Surface Appearance of a 3D Object
  - Creating Relationships between 3D Objects
  - Adding Text to a 3D Scene
  - Configuring a 3D Scene Window
  - Changing the Mechanical Action of a Boolean Object
  - Configuring a Mixed Checkbox
  - Creating a Radio Buttons Control
  - Creating and Operating Boolean Controls and Indicators
  - Building Digital Tables
  - Listboxes, Tree Controls, and Tables
  - Structures
  - Loops
  - Subdiagram and Case Structures
  - Events
  - Strings
  - Adding Color Ramps to Dials, Knobs, and Gauges
  - Adding Sliders or Needles
  - Adding Text Labels to Numeric Objects with Scale
  - Changing Scale Limits
  - Changing Scrolling Ranges of Scroll Bar Controls
  - Characters Numeric Controls and Indicators Accept
  - Configuring the Time and Date in a Time Stamp Control
  - Displaying Higher Digits of Precision in a Time Stamp Control
  - Placing Arbitrary Markers on Scales
  - Scaling Slide and Rotary Controls and Indicators
  - Using Scroll Bar Controls
  - Using the Increment and Decrement Buttons
  - Valid Format Specifiers for Numeric Data Types
  - Empty Paths
  - Symbolic Paths
  - Display Options
  - Creating Type Definitions and Strict Type Definitions
  - Editing Saved Type Definitions and Saved Strict Type Definitions
  - Manually Updating Type Definition Instances
  - Reestablishing the Link to a Type Definition or Strict Type Definition
  - SubVI and Express VI
  - Terminals
  - Selecting a Connector Pane Pattern
  - Setting Required, Recommended, and Optional Inputs and Outputs
  - Icons
  - Menus
  - Troubleshooting
  - Documenting in LabVIEW
  - Printing in LabVIEW
  - Reports in LabVIEW
  - Adding New Exported VIs Entries
  - Editing Existing Exported VIs Entries
  - Removing VIs from the Exported VIs List
  - Adding New Machine Access List Entries
  - Editing Existing Machine Access List Entries
  - Removing Machine Access List Entries
  - Setting Machine Access for the VI Server
  - Removing Browser Access List Entries
  - Calling Shared Libraries in LabVIEW
  - Building a Function Prototype
  - Completing the.c File
  - Importing Functions from a Shared Library File
  - Example: Importing Functions from a Shared Library File
  - Troubleshooting the Import Shared Library Wizard
  - Using the Flatten To String Function
  - Creating Dotted Properties and Methods
  - Creating Properties and Methods
  - Creating Properties and Methods with the Class Browser Window
  - Registering and Handling.NET Framework and ActiveX Events
  - Creating.NET Controls in a.NET Container
  - Creating.NET Objects on the Block Diagram
  - Using Static .NET Properties and Methods
  - Loading .NET Framework 2.0, 3.0, and 3.5 Assemblies in LabVIEW
  - Loading Changes to a .NET Framework Assembly in Memory
  - Specifying Which Version of a .NET Assembly to Use
  - Debugging Calls to.NET Framework Assemblies
  - ActiveX
  - Editing Existing Property and Invoke Nodes
  - Linking Property Nodes and Invoke Nodes to Terminals
  - Connectivity in LabVIEW
LabVIEW Measurement Concepts
LabVIEW Shared Libraries
Signal Processing and Analysis
Accessing Scanned I/O Data
PID and Fuzzy Logic
Distributed System Manager Overview

Product DocumentationLabVIEW User Manual...LabVIEW How ToAdding Comments to the Revision History

Table of Contents

Adding Comments to the Revision History

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Updated2025-04-01
2 minute(s) read

Complete the following steps to add a comment to the History window.

Select Edit»VI Revision History to display the History window.
Enter a description of the changes you made to the VI in the Comment text box near the top of the window.
Click the Add button to manually add the comment to the history for the VI. If the Comment text box contains a comment when you save the VI, LabVIEW automatically adds the comments to the history. The header of the comment includes the next revision number. After you add a comment, it is a permanent part of the history. You cannot edit comments in the VI history.

Leave the History window open while you edit a VI so you can enter information in the Comment text box every time you make a change. To include an entry in the revision history each time you save the VI, even if you do not enter a comment, select History in the History window and make sure there is a checkmark next to Show Empty Entries.

Note By default, LabVIEW does not create history comments automatically. Anyone who makes changes to the VI must enter a description of the changes in the History window to keep the history up to date. You can configure LabVIEW to record comments generated by LabVIEW in the history for the current VI by placing a checkmark in the Record comments generated by LabVIEW checkbox on the Revision History page of the VI Properties dialog box. You also can configure LabVIEW to record comments generated by LabVIEW in the history for all new VIs by placing a checkmark in the Record comments generated by LabVIEW checkbox on the Revision History page of the Options dialog box.

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LabVIEW-Defined Command-Line Arguments

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Resetting the VI Revision History and Revision Number

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LabVIEW-Defined Command-Line Arguments

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Resetting the VI Revision History and Revision Number

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