LibreOffice 25.8 帮助
指定密码，以防止用户擅自更改。
必须输入打开密码方可打开文件。
必须输入权限密码方可编辑文档。
请输入密码。密码区分大小写。
重新输入密码。
要删除密码，请打开文档，然后在没有密码的情况下保存文档。
Due to the limitations of the PDF file format, PDF passwords used to protect exported PDF files can contain only the following characters:
ASCII digits: from “0” to “9”
Uppercase Latin alphabet: from “A” to “Z”
Lowercase Latin alphabet: from “a” to “z”
ASCII punctuation and symbols:
|
Character |
Description |
|---|---|
|
|
Space |
|
! |
Exclamation mark |
|
" |
Quotation mark |
|
# |
Number sign |
|
$ |
Dollar sign |
|
% |
Percent sign |
|
& |
Ampersand |
|
' |
Apostrophe |
|
( |
Left parenthesis |
|
) |
Right parenthesis |
|
* |
Asterisk |
|
+ |
Plus sign |
|
, |
Comma |
|
- |
Hyphen-minus |
|
. |
Period |
|
/ |
Slash |
|
: |
Colon |
|
; |
Semicolon |
|
< |
Less-than sign |
|
= |
Equal sign |
|
> |
Greater-than sign |
|
? |
Question mark |
|
@ |
At sign |
|
[ |
Left Square Bracket |
|
\ |
Backslash |
|
] |
Right Square Bracket |
|
^ |
Circumflex accent |
|
_ |
Low line |
|
` |
Grave accent |
|
{ |
Left Curly Bracket |
|
| |
Vertical bar |
|
} |
Right Curly Bracket |
|
~ |
Tilde |