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- Можно ли после демеркуризациии пропылесосить
- File Format and Specifications
- Как подключить интернет на телефоне texet андроид
- Format Conversions and File Transfer
Wolfram Notebooks are structured interactive documents that may contain text, graphics, sound, calculations, typeset expressions, and user interface elements.
Notebooks have the file extension.
Files of this type are automatically associated with Wolfram Language applications, such as Mathematica , on systems where Wolfram Language applications are installed. CDF files also work in other Wolfram Language products. CDF Player is a freely downloadable player. CDF files are "signed" versions of Wolfram Notebooks.
Altering these can effectively change the application in which notebook files are opened.
It is possible to configure your web browser to automatically launch notebook files in Mathematica by associating Mathematica with these MIME types. Wolfram Notebooks contain only printable, 7-bit ASCII characters and are viewable and largely human-readable in any text editor.
On the desktop, one can determine the version of Mathematica or other Wolfram Language application that created a notebook by opening the notebook in a text editor and finding the line near the top that reads, for instance:. The notebook file format is a cross-platform format, meaning that a Wolfram Language installation on any supported platform can read and display a notebook that has been created on any other Wolfram Language installation on any other platform. These conventions are supported in Wolfram Notebooks; the Wolfram Language interprets these newline conventions in the same way.
A file outline cache in notebook files is used for incremental loading.
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The cache is automatically generated when a notebook is saved, and is stored in the file inside code comments to prevent the notebook expression from being altered. Cache information is denoted in a notebook by lines such as the following, at the beginning and end of the file. If you edit a notebook in a text editor, for example, invalid cache data might be used.
To prevent this, be sure to delete the line near the beginning of the file that specifies the CacheID when editing a notebook outside Wolfram Language-based products.
Wolfram Notebooks can be converted to many formats.
A complete list of formats is available. This can be useful for making a notebook available to a document indexer, for example. Plain text conversion is scriptable using the built-in Wolfram Language functions Export and NotebookImport.
Можно ли после демеркуризациии пропылесосить
Conversions to other formats are also scriptable using the built-in Wolfram Language functions Export and NotebookImport. Since the Wolfram Language interprets newline conventions from all supported platforms the same way, transferring notebooks via binary file transfer has no effect on the notebook.
The Wolfram Language includes dynamic interactivity features that allow code to be evaluated immediately upon opening a notebook or as sections of the notebook are incrementally loaded. The Wolfram Language includes security systems that advise the user when such an evaluation is about to take place for the first time in a given notebook and allow the user to intervene and prevent any dynamic evaluations in that notebook. Security options are defined in the front end as suboptions of the Notebook Security options.
The "TrustedPath" and "UntrustedPath" suboptions define paths for notebook files in which dynamic evaluations should always be considered trusted or a security risk.
The default "TrustedPath" option contains directories used directly by the Wolfram Language, including the installation directory and directories where applications are typically installed. The "UntrustedPath" option contains, by default, directories that are typically used for email attachments and web downloads. The "TrustByDefault" option determines the behavior for any notebook file that is opened from a path not listed in "TrustedPath" or "UntrustedPath".
By default, "TrustByDefault" is set to Automatic , which indicates that the front end should scan Dynamic code for symbols that are potentially dangerous, such as those that can lead to file system operations. Any dynamic evaluation containing dangerous symbols is interrupted, and the user prompted.
Because the notebook file format is plain text, it is mostly human-readable. However, there are ways to obfuscate the code in notebook files by using inline compression. If malicious code is hidden in an initialization cell, it is possible that the Wolfram Language will evaluate the cell immediately when the notebook is opened.
File Format and Specifications
To avoid this potential issue, it is highly recommended that users set the front end option InitializationCellEvaluation to False or Automatic and the option "GlobalInitializationCellWarning" to True when opening notebooks from untrusted sources.
Wolfram Language Revolutionary knowledge-based programming language.
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Wolfram Science Technology-enabling science of the computational universe. Wolfram Notebooks The preeminent environment for any technical workflows. Wolfram Engine Software engine implementing the Wolfram Language.
Format Conversions and File Transfer
Wolfram Data Framework Semantic framework for real-world data. Wolfram Universal Deployment System Instant deployment across cloud, desktop, mobile, and more. Wolfram Knowledgebase Curated computable knowledge powering Wolfram Alpha. File Extensions and MIME Types Wolfram Notebooks are structured interactive documents that may contain text, graphics, sound, calculations, typeset expressions, and user interface elements.
Caching Mechanism A file outline cache in notebook files is used for incremental loading. Binary File Transfer Since the Wolfram Language interprets newline conventions from all supported platforms the same way, transferring notebooks via binary file transfer has no effect on the notebook. Security The Wolfram Language includes dynamic interactivity features that allow code to be evaluated immediately upon opening a notebook or as sections of the notebook are incrementally loaded.