ReadProtected
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ReadProtected
Details

- Individual values associated with read‐protected symbols can be used during evaluation.
- Definition[f], ?f, and related functions give only the attributes for read‐protected symbols f.
Examples
open allclose allBasic Examples (2)Summary of the most common use cases
Properties & Relations (2)Properties of the function, and connections to other functions
Definitions of a read-protected symbol are not shown:
In[1]:=1

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https://wolfram.com/xid/0d6g60xuzc-dbcvng
In[2]:=2

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https://wolfram.com/xid/0d6g60xuzc-eb0nmd
Out[2]=2

As long as the symbol is not locked, the read protection can be removed:
In[3]:=3

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https://wolfram.com/xid/0d6g60xuzc-mnm04
In[4]:=4

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https://wolfram.com/xid/0d6g60xuzc-bfqahb
Out[4]=4

If a symbol is locked and protected, its definitions can be neither changed nor read:
In[1]:=1

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https://wolfram.com/xid/0d6g60xuzc-e7zy5b
In[2]:=2

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https://wolfram.com/xid/0d6g60xuzc-gd592k
Out[2]=2

In[3]:=3

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https://wolfram.com/xid/0d6g60xuzc-b7z3a3

Wolfram Research (1988), ReadProtected, Wolfram Language function, https://reference.wolfram.com/language/ref/ReadProtected.html.
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Wolfram Research (1988), ReadProtected, Wolfram Language function, https://reference.wolfram.com/language/ref/ReadProtected.html.
Text
Wolfram Research (1988), ReadProtected, Wolfram Language function, https://reference.wolfram.com/language/ref/ReadProtected.html.
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Wolfram Research (1988), ReadProtected, Wolfram Language function, https://reference.wolfram.com/language/ref/ReadProtected.html.
CMS
Wolfram Language. 1988. "ReadProtected." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/ReadProtected.html.
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Wolfram Language. 1988. "ReadProtected." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/ReadProtected.html.
APA
Wolfram Language. (1988). ReadProtected. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ReadProtected.html
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Wolfram Language. (1988). ReadProtected. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ReadProtected.html
BibTeX
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@misc{reference.wolfram_2025_readprotected, author="Wolfram Research", title="{ReadProtected}", year="1988", howpublished="\url{https://reference.wolfram.com/language/ref/ReadProtected.html}", note=[Accessed: 29-March-2025
]}
BibLaTeX
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@online{reference.wolfram_2025_readprotected, organization={Wolfram Research}, title={ReadProtected}, year={1988}, url={https://reference.wolfram.com/language/ref/ReadProtected.html}, note=[Accessed: 29-March-2025
]}