Atribúe un contrasinal para evitar que os usuarios efectúen modificacións non autorizadas.
O contrasinal de apertura debe ser tecleada para abrir o ficheiro.
O contrasinal de permiso debe ser inserido para editar o documento.
Type a password. A password is case sensitive.
Re-escriba o contrasinal.
Para eliminar un contrasinal, abra o documento e gárdeo sen contrasinal.
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 |
