> For the complete documentation index, see [llms.txt](https://docs.videc.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.videc.de/acron-9.3/en/erklaerung_zur_bedienung.md).
# Explanation on user control
## ACRON Explorer
### Drag & drop
In the ACRON Explorer you can use the mouse to move objects to a new position.
Note
The existing facility to move objects within each other is indicated by square brackets and a tooltip.
You can cancel the drag & drop by pressing the Esc key or by moving the objects outside the tree.
You can make a copy of the object selected with the mouse using the Ctrl key.
If user administration has blocked access to specific main groups (blue folder icon, e.g. process variables, Service, plant language, etc.), none of the main groups can be moved.
### Multiple selection
In the ACRON Explorer you can click to highlight multiple objects. In the workspace you can then edit objects of the same type simultaneously.
Note
If the selection includes referenced objects, it cannot be deleted.
{% hint style="info" %}
Attention
It is currently only possible to edit the selection for external variables, process variables and alerts.
{% endhint %}
### Search & Filter / Configuration
In the Configuration area in the ACRON Explorer you can use the magnifying glass or filter icon to search for objects:
| Icon | Execution |
| -------------------------------- | --------------------------------------------------------------------------------------------------------------- |
|  | Expand all folders in the ACRON Explorer |
|  | Collapse all folders in the ACRON Explorer |
|  | [Search](#suche-filter) for objects in the ACRON Explorer/ Selection of all objects found |
|  | [Filter](#suche-filter) for objects in the ACRON Explorer |
|  | The selection switches to the next match |
|  | The selection switches to the previous match |
|  | Filtering by the selected process variable type (multiple selection with other process variable types possible) |
|  | Filtering by the selected process variable type (multiple selection with other process variable types possible) |
|  | Filtering by the selected process variable type (multiple selection with other process variable types possible) |
#### Explanations
* The number of hits is indicated by the total number of objects.
* You can use the arrow buttons to switch between the hits.
* Object hits are highlighted in yellow; groups with hits have a magnifying glass icon indicating the number of hit.
* Click on the magnifying glass to select all the hits of the group in question. When you click on a different magnifying glass, the hits of that group are selected and the previous selection is canceled (the highlighting is retained).
* Simultaneously press the Ctrl key and click on the magnifying glass icon of a selected group to cancel the selection.
* Simultaneously press the Ctrl key and click on the magnifying glass icon of an unselected group to add its hits to the selection.
* Simultaneously press the Ctrl key and click on an unselected object to add the object to the selection.
* Simultaneously press the Ctrl key and click on a selected object to remove the object from the selection.
* Filter and search results can be additionally restricted to specific process variable types (multiple selection possible) using the button with the process variables.
Note
As opposed to the search function, the filter only shows found objects.
#### Syntax for the search and filter function
Input is not case-sensitive.
Inputs without special characters are automatically suffixed by an asterisk (\*).
As a result, the search text **a** finds all character strings beginning with **a** or **A**.
| Character | Interpretation |
| --------- | --------------------------------------------------------------- |
| \* | Replaces no character or a string of any characters |
| ? | Replaces precisely one character |
| \| | Logical Or link between two expressions |
| ^ | Finds a specific first letter |
| `\` | Switches to *regular expressions* (explanation on the Internet) |
| \[ ] | Range of characters |
| | \[aeiou0-9] finds a, e, i, o, u, and 0 to 9 |
| | \[^aeiou0-9] finds everything except a, e, i, o, u, and 0 to 9 |
| ( ) | Defines a self-contained expression |
The following texts are present
* Weather
* Intake
* Circulating propeller
* Rohrventilator \[tube fan]
* sand trap clearer
| Search text | Result | Explanation |
| ----------- | ------------------------------------------------------------------------------------- | ---------------------------------------------------- |
| "W" | Weather | All texts beginning with a 'W' |
| "W\*" | Weather | All texts beginning with a 'W' |
| "\*C" | Umwälzpropeller \[circulating propeller] Rohrventilator \[tube fan] sand trap clearer | All texts ending with an 'R' |
| `\`^\[WZ] | Wetter, Zulauf | All texts having a 'W' or 'Z' as the first character |
| `\`^W\|^Z | Wetter, Zulauf | All texts having a 'W' or 'Z' as the first character |
| ?????? | Wetter, Zulauf | All texts consisting of precisely 6 characters |
### Keyboard operation
| | | | |
| -------------- | -------- | ----- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Keys | Function | | |
| Pos1. | | | Jumps to the start of the tree |
| End | | | Jumps to the end of the tree |
| Page up | | | Scrolls upward |
| Page down | | | Scrolls downward |
| Arrow up | | | Jumps one object upward |
| Arrow to right | | | Opens a closed group |
| Down arrow | | | Jumps one object downward |
| Arrow to left | | | - Jumps from a selected object to the higher-level group
- Closes a higher-level open group
- Jumps to the next higher-level group
- Closes the group
- etc.
|
| Shift | + | Mouse | Selects a range |
| Ctrl | + | Mouse | Adds the new choice to the selection |
## Object properties
Administrative and configuration settings can be made in the Object properties in the Management and Configuration areas.
Note
The "[Filter](#filter)" input field can be used to limit the display to specific properties.
### Filter
In the Administration and Configuration areas, the display can be limited to specific properties via the “Filter" input field in the Object properties:
## Validation errors
Warnings and errors are displayed in the Validation area.
Click on an error to select the object with the error. This may involve changing area (Management, Configuration).
If the [Object properties](#objekt-eigenschaften) area is displayed, the properties to which the error relates are bordered in red.
Click on an object with an error (in red type) in the [ACRON Explorer](#designer) to select the error relating to the object in the Validation area.
Fixed errors are deleted from the list in the [Validation area](#designer).
## Dialogs
### Checkbox tree
The checkbox tree enables user-friendly selection of groups and their objects.\
The individual group objects can be selected or deselected using a checkbox.
The groups have a 'tri-state' checkbox offering extended selection options:
| Icon | Meaning |
| -------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
|  | Checkbox has been selected: The group including all its objects has been selected. Group objects cannot be deselected, their checkboxes are unchecked. Newly added group objects are selected by default. |
|  | Checkbox is in intermediate state: The group has not been selected, but at least one group object. The checkboxes of all group objects are checked. Group objects can be selected and deselected. Newly added group objects are deselected by default. |
|  | Checkbox has been deselected: No object has been selected, the checkboxes of all group objects are checked. Group objects can be selected and deselected. Newly added group objects are deselected by default. |
|  | Checkbox is selected and not active: The group object is part of a selected group. Group objects cannot be deselected, their checkboxes are unchecked. |
| Font colors | Meaning |
| Green | The object is new. |
| Blue | The object has been changed. |
| Red | The object contains an error. |
| Gray | The process variable is not usable. |
### Working with the checkbox tree
**Include all objects:**
| | | |
| --------------------------------- | -------------------------------- | ----------------------------------------------------------------------- |
| Select the checkbox of the group. |  | All subordinate objects are likewise selected and cannot be deselected. |
**Select all the objects in a group apart from a few exceptions:**
| | | |
| --------------------------------- | -------------------------------- | ---------------------------------------------------------------------------------------------------------- |
| Select the checkbox of the group. |  | All subordinate objects are likewise selected and cannot be deselected. |
| Click on group checkbox again |  | The checkbox of the group switches to the intermediate state, the group objects can be deselected at will. |
**Select a few objects in a group:**
| | | |
| ----------------------------------- | -------------------------------- | ------------------------------------------------------------- |
| Deselect the checkbox of the group. |  | The group objects are likewise deselected. |
| Select the desired group objects. |  | The checkbox of the group switches to the intermediate state. |
**In the context menu:**
| | |
| -------------------- | -------------------------------------------------------------------------------------------------------- |
| Activate selection | Activating the selection places an **x** in the checkbox for all selected entries (highlighted in blue). |
| Deactivate selection | Deactivating the selection removes the x from the checkbox for all selected entries |
This makes it possible, for example, to select search results with one click:
Select the desired objects from the search results (highlighted in yellow) by clicking on the magnifying glass symbol (the background of these objects changes from yellow to blue) and choose "Activate selection" from the context menu. The checkbox is activated (x) for all objects highlighted in blue.
Note
In the area of the access rights for process variables there is a second checkbox used to control write access to the process variables. Select W to allow Write access or R for Read-only. Write access is necessary in order to overwrite values and grant permissions in the Reporter.
| Icon | Execution |
| -------------------------------- | --------------------------------------------- |
|  | Delete input |
|  | Expand all folders in the object properties |
|  | Collapse all folders in the object properties |
### Message window
Message windows show messages relating to the following icons:
| Icon | Meaning |
| -------------------------------- | -------- |
|  | Question |
|  | About |
|  | Warning |
|  | Error |
Note
The text in the message window can be copied using the right mouse button.
## Menu bar
### Configuration mode
As multiple users can log in to a plant, it must be ensured that there is no competing access. The right to change the configuration may only be assigned exclusively to one user at a time.
The button in the header indicates the current configuration status of the user logged in to the plant, and allows the status to be changed by clicking.
The three colors of the button indicate:
* Green - Configuration mode active
The user is in Configuration mode. He can make and save configuration changes within the scope of his user privileges. For all other users the button is colored red; they have read-only access.
* Yellow - Configuration mode inactive
Configuration mode is enabled, changes are not possible. For all other users the button is also yellow, and Configuration mode is enabled.
* Red - Configuration mode disabled
The user has read-only access. Another user is in Configuration mode, the other users also have read-only access.
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://docs.videc.de/acron-9.3/en/erklaerung_zur_bedienung.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.