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Problem:

Revit's built-in level line and gridline tool makes it difficult to adjust after creation, often resulting in errors or misalignment.
This poses challenges for maintaining precision in models, especially during the iterative design process.

Solution:

A custom tool is developed to simplify the creation and modification of datum by allowing users to input precise numerical values directly. This ensures high accuracy and reduces the chances of misalignment or errors during adjustments.

Future development plans include integrating this functionality with a HTML-based GUI that will provide a visual preview of the datum during creation and editing, enhancing user interaction and usability.

This approach ensures consistent precision, improves user efficiency, and sets the groundwork for an intuitive, visually-guided datum management system.

2a__Add New Levels :

1. Select a starting level from the dropdown list. (The tool automatically selects the highest level by default.)
2. Enter the number of new levels to create.
3. Specify the level height in millimeters (mm).
4. Click the "Run" button to confirm and generate the new levels.

2aa__Modify Existing_Level :

1. Select the starting and ending levels from the dropdown list for modification.
2. Enter the desired level height in millimeters (mm).
3. Toggle the option to adjust the remaining levels directly above, if needed.
4. Click the "Run" button to confirm and apply the changes.

2b__Add Orthogonal Gridlines :

1. Enter the vertical and horizontal spacing in millimeters (mm), separated by spaces.
2. Specify the vertical and horizontal numbering for the gridlines.
3. Select the grid type from the dropdown list.
4. Click the "Run" button, then click on the canvas to place the gridlines.

2bb__Modify Existing Gridline :

1. Enter the new grid spacing in millimeters (mm) to modify the selected gridlines.
2. Update the grid numbering as needed.
3. Toggle the option to reverse the numbering order, if required.
4. Select the grids and click the "Finish" button to apply the modifications.