- You wouldneed a special type of program or software to open or convert thistype of file. To open a.cfg extension file, use a program calledFree File Viewer.
- A configuration file (.cfg) is normally a text file that can be opened in any text editor such as TextEdit.
- Hi, this.cfg file has been a pain in the ass. I am trying to modify my router files so it blocks ads from router. I do not want to use applications like adblock or adblockplus, I want to know how to open.cfg files and read them and edit them. When I open them with textedit, it is all random symbols, and it is non readable.
- A configuration file (.cfg) is normally a text file that can be opened in any text editor such as TextEdit. Some software will create a configuration file that will comprise non alphanumeric.
Adobe Acrobat Reader DC software is the free global standard for reliably viewing, printing, and commenting on PDF documents. And now, it's connected to the Adobe Document Cloud − making it easier than ever to work across computers and mobile devices.
Note
Mac users should refer to the Admin Guide for Macintosh.
Administrators typically configure installers before deployment via preferences and properties so that machines under their control share the requisite settings. Both Acrobat and Reader share a common set of preferences and are similar in their configuration details. Since per-machine user interface configuration is not scalable, Adobe provides two key resources to help you configure Acrobat and Reader prior to deployment:
- Customization Wizard: A free utility for configuring the installer prior to deployment. It is offered in both Windows and Mac versions.
- Preference Reference: A dictionary of registry and plist preferences.
Note
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Adobe strongly recommends that you do not make changes to the registry unless you are knowledgeable about editing and troubleshooting application settings. Improper use of this feature can result in the corruption of critical system files Before modifying the registry, make sure you understand what product versions are supported, what the default settings are, and how to create new keys.
Fundamentals¶
Before continuing, you should know that:
- The tables and examples in most documents use the Windows registry. Naming conventions and paths are relatively similar on Macintosh, Unix, and Linux systems.
- The Preference Reference describes 500+ settings.
- HKCU settings are end user settings. Most user interface settings have a corresponding HKCU preference.
- HKLM preferences will lock a feature and require administrator privileges to modify.
- Preference names are case sensitive.
- Just because you don’t see the preference doesn’t mean it’s not there and/or cannot be used:
- Some preferences exist internally and are not visually apparent in the registry until after a feature is used. Subdirectories may also appear as the code is exercised.
- Many features are not enabled by default and their related preferences must be manually created.
- Many preferences cannot be set thought the UI and must be manually created.
- The easiest way to configure the product is to exercise the UI and then manually massage the preferences which don’t have a corresponding UI.
Preference locations¶
- Settings for the currently logged-in user:
HKEY_CURRENT_USERSoftwareAdobe(productname)(version)
- Lockable keys (32 bit):
HKEY_LOCAL_MACHINESOFTWAREPoliciesAdobe(productname)(version)FeatureLockDown
- Lockable keys (64 bit):
HKEY_LOCAL_MACHINESOFTWAREWow6432NodeAdobe(productname)(version)FeatureLockdown
- Non lockable machine keys:
HKEY_LOCAL_MACHINESOFTWAREAdobe(productname)(version)
Note
DC products use the track name as the version. Thus, the Continuous track will always use “DC” and the Classic track will always use a year such as 2015 or 2017.
Acrobat DC preferences: Classic track
Data types¶
When adding new keys to the registry it is critical that you get the Value data and Name fields correct as shown below. Most preferences have a data type prefix. These need to be added in the format that the application can recognize.
Prefix | Data Type | Registry type | Description |
---|---|---|---|
a | atom | REG_SZ | The string may be UTF-8 and can therefore include Unicode. The Value Data field is typically entered as text. For example, a value for cHandlers:aPrivKey could be Adobe.PPKLite . |
b | bool | REG_DWORD | 0 (false) or 1 (true). |
c | cab | N/A | Containers that hold keys are preceded by a “c” on Windows. |
i | int | REG_DWORD | An integer. |
s | string | REG_BINARY | ASCII only. |
t | text | REG_SZ | The string may be UTF-8 and can include Unicode. The Value Data field is entered as text. For example, a value for cEDC:tLastServerURL could be https://aps.serv.com:123 . Note: 7.x and earlier use REG_BINARY and tValue. |
a, s, or t | ASPath | See a, s, and t above. | ASPath objects require three components:
|
Administrator locking¶
Many preferences may be locked so that end users cannot change them via the product’s user interface. To do so, set them in the location described above. Some preferences only reside in the lockdown location and do not have a counterpart in the user preference area. For details about specific preferences, refer to the Preference Reference.
Sample use case¶
Modifying existing or creating custom preferences requires some knowledge of the supported naming conventions and data types. In general:
- “Hives” are usually the top-level HKCU, HKLM, and other directories, but it’s also common to refer to subdirectories by the same name.
- Folders/directories that contain the actual preferences (keys), appear in the left-hand window, these often are the home for sub containers.
- Some keys are containers called “cabs” (Windows) or “dictionaries” (Mac). These names are always prepended by a “c” on Windows. For example,
cAdobe_ChainBuilder
andcAcceptablePolicyOIDs
. The lowest level key container is an array. Item names are always “c” + <index number>. Thus, an array undercAcceptablePolicyOIDs
could be c0, c1, c2, c3, and so on. The subkey structure has a dependency on the data type of the parent container. Cabs at the c0, c1, c2, etc. level use a subdirectory namedcValue
that contain the actual key data. For all other data types, store the value directly at the c0, c1, c2, etc. level - The lowest key level defines the actual preference. It is always a name/value pair.
To create a new preference on Windows for example:
- Open the registry editor.
- Look up the preference you want to set in the Preference Reference or the pertinent document. You’ll need to know the path, name, and value.
- Navigate to the required location.
- Create any container keys you might need on the left-hand side of the editor.
- Highlight that containing key and in the right hand side, right click and choose New > <some data value>.
- Enter a name.
- Right click on the preference name and enter a value.
APIs and the SDK¶
Many preferences are exposed in the API. The plugins use the cross platform ASCab preference mechanism supported by all Acrobat products. This mechanism uses calls such as
AVAppGetPrefCab
and AVAppSetPrefCab
, that were introduced in Acrobat 5.0. Refer to the Acrobat and PDF Library API Reference for details on these calls.What is Free File Viewer?
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About file types supported by Free File Viewer
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